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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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KOREAN JOURNAL OF CROP SCIENCE
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Volume & Issues
Volume 57, Issue 4 - Dec 2012
Volume 57, Issue 3 - Sep 2012
Volume 57, Issue 2 - Jun 2012
Volume 57, Issue 1 - Mar 2012
Selecting the target year
Growth and Yield of Rice in Levels of Nitrogen and Water Management of Reclaimed Saline Soil in Southwestern Area
Kim, Young-Doo ; Choi, Min-Kyu ; Lee, Kyung-Do ; Baek, Man-Gee ; Ku, Bon-Il ; Kang, Shin-Gu ; Park, Hong-Kyu ; Kim, Bo-Kyong ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 203~208
DOI : 10.7740/kjcs.2012.57.3.203
Field experiment was carried out to identify the proper water exchange interval for the rice cultivation on reclaimed saline soil with different nitrogen levels in southwestern area. The nitrogen fertilizer was applied 14, 17 and 20 kg per 10a by ingredient, and intervals of water exchange treated 3, 6 and 9-day periods from transplanting of rice(Oryza sativa var. Cheongho) to maturing stage in Munpo soil series. The salinity levels ranged 0.10~0.24% and 0.24~0.32% of 3-day and 6-day respectively, whileas it ranged 0.35~0.52% for 9-day interval of water exchange during vegetative stage. Water exchange and nitrogen level showed significant effects on the plant growth, yield, and quality. The yield of milled rice on 3-day and 6-day interval of water exchange showed 497 kg/10a and 492 kg/10a and that were significantly higher than that of 9-day interval in 2008 and 2009. Milled rice yield of 9-day interval of water exchange was lower than that of 3-day and 6-day interval of all nitrogen levels. Plant growth and yield components were not significantly different between 3-day and 6-day interval of water exchange of all nitrogen levels. The combination of nitrogen fertilizer level of 17 kg/10a and 6-day interval of water exchange after transplanting might be recommended for maximum yield realization and minimize salt injury at reclaimed medium saline soil in southwestern area.
Differences of Growth Characteristics and Colorant Level in Two Breeding Lines of Persicaria tinctoria H. Gross
Kim, Seong-Ju ; Heo, Buk-Gu ; Kim, Kwan-Su ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 209~214
DOI : 10.7740/kjcs.2012.57.3.209
Indigo crop, Persicaria tinctoria H. Gross is an annual plant containing natural colorant, the blue dye indigo, and local cultivars had been cultivated to produce natural indigo for textile dyeing in Korea since ancient times. Naju No. 2 is a new mass-selected line from the mother population, Naju Local cultivar. In this study, two breeding lines of Naju Local and Naju No. 2, have been cultivated in four different locations, the South regions of Korea, to compare plant growth and yield characteristics between two lines. Naju No. 2 was higher in plant height, and Naju Local has more 1st branches. Naju No. 2 has larger leaf area and higher width/length ratio of leaf, showing the round leaf type as morphological stable character without regional differences. Though there was considerable regional variation in fresh and dry top weight of harvested plant, the significant difference of plant weight between two lines were not shown. The ratio of leaf to total shoot of dry weight of Naju No. 2 was higher than one of Naju Local, indicating that Naju No. 2 has better yielding of colorant which is synthesized mostly in leaf. Naju No. 2 contained more Niram (crude indigo extract) and indigo, and showed much blueness at dyeing of silk using fresh leaves than Naju Local. We concluded that a new line, Naju No. 2 could be a superior cultivar due to having higher leaf yield and better quality of natural colorant than Naju local cultivar.
Optimal Drainage Time of Barley Seeding Synchronized with Rice Harvesting in Paddy Field
Kim, Yang-Kil ; Choi, Jae-Seong ; Lee, Mi-Ja ; Park, Jong-Chul ; Kim, Tae-Su ; Kim, Kee-Jong ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 215~218
DOI : 10.7740/kjcs.2012.57.3.215
We have carried out the experiment to investigate optimal drainage time of barley seeding synchronized with rice harvesting in paddy field. Number of emerged barley seedling on moist paddy field was less than that of common paddy field. It is very hard to plow using combine owing to long time to work on wet condition compared to drying condition of paddy field. According to the drainage time, growth and yield of barley were not significantly different. However, late drainage time decreased the spikes per
. Rice yield and 1,000 husked rice grain weight were not significant depending on drainage times at 15 days, 20 days and 25 days before barley seeding. The range of 1,000 husked rice grain weight was 21.7~22.2 g on different drainage conditions. In results, on considering of soil hardness and time of labor, the optimal contents of soil moisture was about 33%. This study reveals that drainage time at 20 days before barley seeding is proper to increase seedlings and yield.
Effects of Seed Size Variation on Germination and Seeding Vigour of Sorghum (Sorghum bicolor L.)
Jung, Ki-Yuol ; Yun, Eul-Soo ; Park, Chang-Young ; Choi, Young-Dae ; Hwang, Jae-Bok ; Jeon, Seung-Ho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 219~225
DOI : 10.7740/kjcs.2012.57.3.219
Seed size has been considered as an effective criteria for selection of the most vigorous seeds in sorghum [(Sorghum bicolor (L) Moench]. The smaller seeds were inferior to the larger sizes in emergence and grain yield. This study was conducted to determine germination rate, field emergence and vigor of sorghum for selection of high quality seed by different seed size. Sorghum cultivar of two (Hwanggeumchal and Tojong) were separated into five seed size proportion (<2.36, 2.80, 3.15, 3.35 and >3.55 mm diam.) according to seed size. The larger seed was more higher 1,000 seeds weight, seed density, carbohydrates and protein content. Total seed germination performing varied 92% at the largest size (>3.55 mm diam.) frequently inferior to slightly 67% at smaller seed (2.36 to 2.80 mm diam.) in the standard germination test. Seed size did have a significant effect on mean emergence time (MET) and maximum emergence rate index (ERI) and percentage of emergence. It should be noted that the results refer to MET of sorghum seeds ranging from 4.26 to 4.74 days. The relationship of seed size was not only to stand establishment but to grain yield. Yield was most affected by seed size and large seeds were superior to the smaller seed in 25~37% of the cases. Especially, yield was significant under 3.15 mm the beginning.
Physicochemical Characteristics of Starches in Rice Cultivars of Diverse Amylose Contents
Yoon, Mi-Ra ; Chun, A-Reum ; Oh, Sea-Kwan ; Hong, Ha-Cheol ; Choi, Im-Soo ; Lee, Jeong-Heui ; Cho, Young-Chan ; Kim, Yeon-Gyu ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 226~232
DOI : 10.7740/kjcs.2012.57.3.232
Through the sampling four rice cultivars with differing amylose contents, the relationship between the structural and gelatinization properties of endosperm starches was analyzed. These rice varieties exhibited different chain length distribution ratio within the amylopectin cluster as well as varing amylose levels. The proportion of amylopectin short chains of in Goami cutlivars was higher than the other varieties, whereas the Goami 2 which shows amylose extender mutant properties in the endosperm showed the highest proportion of long chains. In X-ray diffraction analysis of rice starches, the Goami 2 variety displayed a B-type pattern whereas the other varieties were all A-type. Among the cultivars with high and normal rice starch levels, those with the higher amylose contents showed distinctly lower swelling. Goami 2 rice was found to have the highest onset and peak gelatinization temperature from the differential scanning calorimetry results. The four rice cultivars under analysis also showed different rates of hydrolysis by amyloglucosidase. These findings suggest that the composition and chemical structure of the starch content is a major determinant of both the gelatinization and functional properties of rice.
The Quality and Yield of Early Maturing Rice Varieties affected by Cultural Practices in Gangwon Plain Region
Lee, An-Soo ; Cho, Youn-Sang ; Kim, In-Jong ; Ham, Jin-Kwan ; Jang, Jin-Seon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 233~237
DOI : 10.7740/kjcs.2012.57.3.233
The yield of Unkwangbyeo transplanted on May 10 was 596kg/10a in 2010. The rice yield decreased with delaying transplanting date. The head rice rate was 91.9% when transplanted in June 10, and the rate decreased as the transplanting got earlier. In 2011, the yield increased by 5~8% when transplanted on June 10 because of the increase of Ripened grain ratio and 1,000 grain weight. The yield, when transplanted in the distance of
with 5 plants, was higher than the other treatments. The yield of Oraebyeo, transplanted on June 10, decreased by 6% compared with transplanting on May 25, while the yield, transplanted in the distance of
with 5 plants, increased by 5% because of the increase in the number/
of panicle and grain. The head rice rates of the two varieties increased by 5~7% and the Toyo palatability appeared to get improved when transplanted on June 10 possibly because of the effect of low ripening temperature by 0.9~
with delaying heading date from 9 to 12 days.
The Effects of Solidified Sewage Sludge as a Soil Cover Material for Cultivation of Bioenergy Crops in Reclaimed Land
An, Gi-Hong ; Koo, Bon-Cheol ; Choi, Yong-Hwan ; Moon, Youn-Ho ; Cha, Young-Lok ; Bark, Surn-Teh ; Kim, Jung-Kon ; Yoon, Yong-Mi ; Park, Kwang-Guen ; Kim, Jang-Taeck ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 238~247
DOI : 10.7740/kjcs.2012.57.3.238
To determine the possibility of solidified se wage sludge for use as a soil cover material in reclaimed land, the growth of energy crops and soil chemical properties investigated in each experimental plots during 2 years (2010 and 2011). The experimental plots consisted of the mixing with solidified sewage sludge plot (SS50), the covering with solidified sewage sludge plot (SS100), and the original reclaimed land plot (ORL) on reclaimed land for the intended landfill in Sudokwon Landfill Site Management Corporation (SLC). Plant height, measured in the second year (2011), was highest in the Geodae 1 grown at plots treated with solidified sewage sludge. The growth of energy crops cultivated in both SS50 and SS100 were better than in ORL. The contents of organic matter (OM) and total nitrogen (T-N) at both SS50 and SS100 were considerably higher than that of the ORL over 2 years. However, the soil from ORL showed higher salinity with high contents of exchangeable
cation than that of SS50 and SS100 over 2 years. We consider that soil chemical and physical properties on reclaimed land used in this study could be improved by the application of solidified sewage sludge due to following reasons. Firstly, the application of solidified sewage sludge may provide soil nutrients on reclaimed land i.e. the growth of energy crops better than in ORL, resulted in more OM and T-N contents in SS50 and SS100. Secondly, the top layers mixed or covered with solidified sewage sludge on reclaimed land may be prevented the salinity accumulation due to capillary rise to surface soil, and improved the cultivation layer for effectively propagating the rhizomes of energy crops. Thus the solidified sewage sludge may be a great soil cover materials for cultivation of bioenergy crops in reclaimed land.
Effect of Different Cultivation Region, Transplanting and Harvesting Date on Yield and Quality of "Shinongheugchal", "Shinmyeongheugchal"
Song, Young-Eun ; Lee, Deok-Ryeol ; Cho, Seung-Hyun ; Lee, Ki-Kwon ; Lee, Jae-Heung ; Song, Young-Ju ; Jeung, Jong-Sung ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 248~253
DOI : 10.7740/kjcs.2012.57.3.248
Demand is increasing for new functional and health food such as natually colored or flavored rices. Shinongheugchal, Shinmyeongheugchal, colored glutinous rice, were breed as new variety in Jeollabuk-do ARES. Shinongheugchal and Shinmyeongheugchal are medium to late maturing cultivars and higher than Heugnambyeo in term of C3G content. It was conducted to improve the quality of Shinongheugchal, Shinmyeongheugchal in different cultivation regions, transplanting time. The cultivation regions was Jinan (mid-mountainous area) and Iksan (plain area). Transplanting time was May. 20, May. 25 May 30 and Jun. 5 in Jinan, that of Iksan was Jun. 5, Jun. 10, Jun. 15 and Jun. 20. The average heading date of Shinongheugchal and Shinmyeongheugchal was Aug. 13, Aug. 19 and Aug. 15, Aug. 22 in Jinan and Iksan. The average yield of Shinongheugchal(brown rice) in Jinan was 514
and that of in Iksan was 529
. The average yield of Shinmyeongheugchal(brown rice) in Jinan was 508
and that of in Iksan was 511
. The average C3G content of Shinongheugchal in Jinan was 273.9 mg/100g, that of in Iksan was 228.2 mg/100g. The average C3G content of Shinmyeongheugchal in Jinan was 126.3 mg/100g, that of in Iksan was 101 mg/100g. The optimal transplanting date was May 30 in Jinan and June 10 in Iksan considering the yield and C3G content in Shinongheugchal. The optimal harvesting date of Shinongheugchal in Iksan was 50 days after heading.
Effect of Virus-free Plant and Subsoiling Reversion Soil for Reduction of Injury by Continuous Cropping of Sweet Potato
Song, Hae-Ahn ; Kim, Kab-Cheol ; Lee, Seung-Yeob ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 254~261
DOI : 10.7740/kjcs.2012.57.3.254
To reduce the injury by continuous cropping of sweet potato (Ipomoea batatas (L.) Lam.), the farmer's plant and virus-free plant were cultivated with the density of
(June 10, 2011) in continuous cropping soil (CCS) and subsoiling reversion soil (SRS). Fertilizer was applied at the rates of 55-63-156
) and 10
of cattle manure in CCS, and it was applied the 50% increased cattle manure compost and nitrogen in DRS. Symptoms of viral infection were revealed in the farmer's plant at 30 days after planting, but there were no symptoms in virus-free plant. The yield of virus-free plant was more increased 15% and 10.5% than that of farmer's plant in DRS and CCS, respectively. The yield of sweetpotato in SRS was more increased 8.8% and 3.2% in farmer's plant and virus-free plant compared to CCS, respectively. In DRS, the rate of marketable tuber of virus-free plant was increased by 80% compared to the farmer's plant (60.1%). The virus-free plant was produced the tuber with more brilliant peel color and well-formed shape compared to the farmer's plant. The increased yield of virus-free plant and in SRS soil condition showed a positive relationship (p=0.05) with the number of leaf per plant at 30 days and the number of branch per plant at 120 days after planting. The results showed that the early growth after planting was very important for the development of storage root. Therefore, the deep-subsoil reversion and cultivation of virus-free plant could be reduced the injury by continuous cropping of sweet potato, and increased farm income.
Difference of Growth and Root Characteristics of Sweetpotato by Cultivated Region
Han, Seon-Kyeong ; Song, Yeon-Sang ; Ahn, Seung-Hyun ; Lee, Hyeong-Un ; Lee, Joon-Seol ; Chung, Mi-Nam ; Park, Kwang-Geun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 262~270
DOI : 10.7740/kjcs.2012.57.3.262
This research was performed to find out the root characteristics of sweetpotato (Ipomoea batatas LAM.) cultivars according to the cultivation regions. Total 10 sweetpotato culivars, 6 yellow, 2 purple and 2 orange, were used for experiment. Samples were cultivated in Muan, Iksan, Nonsan, Boryeong and Hamyang. Precipitation and average temperature during the growth period of sweetpotato cultivation were 882~1,682 mm and 16.7~
, respectively. Accumulated temperature was 3,122~
. Soil texture was found of sandy loam in Muan, Iksan and Boryeong, sandy clay loam in Nonsan, and loam in Hamyang. The yield of root, dry matter content, starch value and soluble solids contents were high in Muan. The length/width ratio was high in Hamyang. The color values of sweetpotatoes were high in Nonsan. The protein content of sweetpotato powder was high in the Iksan, crude fat content and ash content were high in the Hamyang. The results of this study, we could see that root characteristics of sweetpotato in the same cultivars appeared differently depending on the cultivated regions.
Evaluation of Quality Characteristics and Definition of Utilization Category in Korean Potato (Solanum tuberosum L.) Cultivars
Lee, Yeh-Jin ; Jeong, Jin-Cheol ; Yoon, Young-Ho ; Hong, Su-Young ; Kim, Su-Jeong ; Jin, Yong-Ik ; Nam, Jeong-Hwan ; Kwon, Oh-Keun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 271~279
DOI : 10.7740/kjcs.2012.57.3.271
Total twenty cultivars of potato (Solanum tuberosum L.) were grown at Gangneung where is located in low land of Korea. Their tubers were harvested from 100 to 120 days after planting, and over 150 g of tubers were selected for quality evaluation. Dry matter, starch, amylose in starch, ascorbic acid, protein, individual sugars and mineral were analyzed and mealiness of cooked potatoes were also evaluated by panel test. Dry mater content was the highest in 'Haryeong', 'Jayoung' and 'Shepody', and the biggest starch granules were observed in 'Jayoung' and 'Sinnamjak'. In addition, the content of amylose was highest in 'Haryeong', 'Chudong' and 'Goun'. Mineral content showed the slight difference between cultivars, but it's tendency was not clear. Vitamin C content was highest in 'Jayoung' as 62.5
FW, and 'Chugang' exhibited the highest content of protein. Sugar content was lower in cultivars for single one than double cropping. The lowest sugar content was observed in 'Atlantic' and 'Namseo' among cultivars for single cropping, and in 'Goun' for double cropping. As a result of analysis for quality factors, we could select nine cultivars ('Atlantic', 'Gahwang', 'Gawon', 'Goun', 'Hareong', 'Irish Cobbler', 'Jasim', 'Jayoung' and 'Shepody') with high dry matter content and low reducing sugar as a cultivar group for processing. Additionally, seven cultivars ('Chugang', 'Gawon', 'Goun', 'Hareong', 'Irish Cobbler', 'Jasim' and 'Seohong') with high mealiness and amylose content and five cultivars ('Atlantic', 'Chudong', 'Gahwang', 'Jopung' and 'Jowon') with low mealiness and amylose content were classified as groups for boiled or steam cooking and for soup or pot dishes, respectively.
Milling Condition and Harvesting Time for Improving Milling Recovery of Head Foxtail Millet Grain
Lee, Jae-Saeng ; Ko, Jee-Yeon ; Song, Seuk-Bo ; Woo, Koan-Sik ; Kim, Jung-In ; Kim, Hyun-Young ; Jung, Tae-Wook ; Kwak, Do-Yeon ; Oh, In-Seok ; Kim, Ki-Young ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 280~285
DOI : 10.7740/kjcs.2012.57.3.280
This study was conducted to establish proper milling condition and harvesting time for improving the milling recovery of head foxtail millet grain. Brown foxtail millet recovery and the percentage of head foxtail millet recovery were significantly different according to the number of hulling and milling time. Also, the interaction of these factors had influence on brown foxtail millet recovery and the percentage of head foxtail millet recovery. To improve the percentage of head foxtail millet recovery, it was effective to hull grain twice and mill for 1.30 minute. 1000-grain weight of brown foxtail millet, brown foxtail millet recovery, hardness of brown foxtail millet, milling recovery, and the percentage of milling recovery of head foxtail millet grain were significantly different according to harvesting day after heading. For improving the ratio of ripened grain and the percentage of recovery of head foxtail millet, it is recommended to harvest 45 days (accumulated temperature :
) after heading (DAH) in early maturing Hwangkeumjo, 50 DAH (accumulated temperature :
) in mid-late maturing Samdamae and Kyeongkwan1, and 55 DAH (accumulated temperature :
) in late maturing Samdachal.
Variation of Saponin Content in Korean Native Soybean Landraces Reintroduced from USA to Korea
Jang, Eun-Kyu ; Piao, Xiangmin ; Hwang, Tae-Young ; Kim, Sun-Lim ; Chung, Gyu-Hwa ; Tsukamoto, Chigen ; Choi, Yu-Mi ; Lee, Myung-Chul ; Lee, Jeong-Ran ; Kim, Hong-Sig ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 286~295
DOI : 10.7740/kjcs.2012.57.3.286
This study was carried out to assess the variation of saponin contents in 293 Korean native soybean landraces reintroduced from USA to Korea in 2007. Group A saponin content ranged from 149.8
with an average of 484.9
. Group B saponin content ranged from 2160.1
with an average of 3670.0
. Total saponin content including both group A and B contents ranged from 2502.8 to 8764.0
with an average of 4154.9
. Five promising landraces for use as breeding materials that showed higher than any other landraces in group B and total saponin content were IT226841, IT226761, IT226841, IT226828 and IT228534. IT226841 showed the highest saponin content with group B content of 7868.5
and total saponin content of 8764.0
among landraces. In the relationship among each components, group A saponin content showed a positive correlation with group B saponin content (r=0.3708) and total saponin content (r=0.5119). Group B saponin content showed a very high positive correlation (r=0.9876) with total saponin content. When landraces were compared for the total saponin content based on collected location, landraces from North Korea showed the highest, Gyeonggi-do showed second highest content, followed by Chungcheongbuk-do, Gangwon-do, Gyongsangbuk-do, Chungcheongnam-do, Gyongsangnam-do, Jeollabuk-do and Jeollanam-do. Landraces were also grouped according to seed size and seed coat color. Small seed group was higher than medium and large seed groups that showed no significant difference in total saponin content. Seed coat colors showed no significant difference in total saponin content.
Discrimination of Korean Domestic and Foreign Soybeans using Near Infrared Reflectance Spectroscopy
Ahn, Hyung-Gyun ; Kim, Yong-Ho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 296~300
DOI : 10.7740/kjcs.2012.57.3.296
Discrimination of geographic origin of agricultural products is a important issue in Korea because the price difference between Korean domestic and imported cereals is a key among some reasons. NIRS (Near Infrared Reflectance Spectroscopy) has been applied to classify the geographical origin of soybeans. Total 135 samples (Korean domestic 92 and foreign 43) were used to obtain calibration equation through 400~2,500 nm wavelength. The math treatment with 1st derivative and 4 nm gap and the modified partial least squares(MPLS)regression was outstanding for calibration equation. The standard error of calibration and determination coefficient in calibration set(n=115) was 6.65 and 0.98, respectively. And it showed that the extra 20 samples for validation equation were identified their authentication correctly. This study describes that the application of NIRS would be possible for discrimination of geographical origin between Korean domestic and imported soybeans.
Comparison of Properties Affecting the Palatability of 33 Commercial Brands of Rice
Kim, Chae-Eun ; Kang, Mi-Young ; Kim, Mi-Hyun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 301~309
DOI : 10.7740/kjcs.2012.57.3.301
This study was performed to compare the properties affecting the palatability of 33 commercial brands of rice. Five rice varieties were identified including Chucheongbyeo, Hitomebore, Ilpumbyeo, Nampyeongbyeo, Seachucheongbyeo, were compared in terms of physicochemical characteristics, texture, head riceratio, and palatability through Toyo values. We also analyzed the relationship between grain characteristics and palatability. Amylose content of 5 rice varieties ranged from 17.04-17.98%. Nampyeongbyeo had the lowest and Seachucheongbyeo had the highest content of amylose among rice varieties. The protein content of 5 varieties ranged from 6.72-7.55%. Nampyeongbyeo showed the highest content. The moisture content varied from 13.08-14.83%. Chucheongbyeo has the highest moisture content. The head rice ratio of Ilpumbyeo, Chucheongbyeo, and Seachucheongbyeo were over the 90%, which was lower than that of Japan. Chucheongbyeo had the lowest hardness value and the highest adhesiveness value as measured by texture analyzer. The palatability value was highest in Chucheongbyeo, and the lowest in both Nampyeongbyeo and Ilpumbyeo. The palatability value was negatively correlated with protein content, but positively correlated with texture, moisture content, and head rice ratio. Based on this results, the rice varieties with high palatability had lower contents of amylose and protein, but higher moisture content and head rice ratio. Chucheongbyeo seemed to be the valuable variety with the highest palatability among them.
Optimum Sowing date for Seed Production of Late-maturing Vegetable Perilla at Green House of Middle Region
Ju, Jung-Il ; Choi, Hyun-Gu ; Kang, Young-Sik ; Seong, Yeul-Gue ; Lee, Hee-Bong ;
KOREAN JOURNAL OF CROP SCIENCE, volume 57, issue 3, 2012, Pages 310~315
DOI : 10.7740/kjcs.2012.57.3.310
The vegetable perilla is proved to be a late-maturing plant that flowers at the early of Oct. regardless of sowing time, so that the sowing time for seed production should be decided under consideration of maturity before beginning of frost. This experiment was carried out to determine the sowing date for seed production at greenhouse on late-maturing perilla cultivar, 'Ipdlkkae 1' in the middle region of Korea. The sowing dates were 8 times from May 6 to July 15 with an intervals of 10 days. As sowing date was delayed, the stem height, no. of nodes, no. of branches, no. of cluster per plant and no. of capsules per cluster were decreased. But as sowing was early, the lodging was occurred because of heavier growing. Days to flowering was linearly decreased about 0.86 day as affected by a day's delayed. But days from flowering to maturing was not significantly affected by sowing date. The grain yield was not significantly different among sowing from May 6 to June 15 and rapidly decreased the sowing after June 25 because of the reductions of no. of cluster and percent of ripened grain. Considering accumulative temperature, lodging, germination rate and grain yield, it is suggested that the sowing for seed production in late-maturing perilla cultivar should be finish before June 15 (transplanted at July 15) at greenhouse in the middle region of Korea.