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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 58, Issue 4 - Dec 2013
Volume 58, Issue 3 - Sep 2013
Volume 58, Issue 2 - Jun 2013
Volume 58, Issue 1 - Mar 2013
Selecting the target year
Physiological Response of Potato Variety to Soil Salinity
Kim, Sun ; Yang, Chang-Hyu ; Jeong, Jae-Hyeok ; Choi, Weon-Young ; Lee, Kyu-Seong ; Kim, Si-Ju ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 85~90
DOI : 10.7740/kjcs.2013.58.2.085
This study was conducted to examine the basis for the information to select the suitable potato varieties grown in new reclaimed land. The potatoes of five varieties were planted in the port with 4 different electrical conductivities of saturated extracts of soil taken the Saemangeum reclamation area, which was made of non-treatment salt and three concentrations of salt treatment, 1.6 dS
, 3.2 dS
, 4.8 dS
, respectively. All of the potato varieties were uniformly emerged without missing plant in all treatment groups, even 4.8 dS
treatment group. According to the salt concentration of soil, required date to the emergence of the potato comparing to non-treatment salt was delayed 3-4 days in 1.6 dS
, 6-10 days in 3.2 dS
, 7-13 days in 4.8 dS
, respectively, and the number of its branch decreased by 14-58% comparing to non-treatment salt depending on varieties. Since the increase of the salt concentration of the soil was more serious the decrease of the number of its branch, but plant height tended to increase when branch number per plant was small, which was depending on more number of its branch than salt concentration. Fresh tuber yield of potato comparing to non-treatment salt were decrease 33.7% in 1.6 dS
, 59.5% in 3.2 dS
, 79.3% 7-13 days in 4.8 dS
, respectively. The threshold EC starting the growth inhibition of fresh weight decreased was 1.2 dS
for Chudong, 1.8
for Chubeak, 1.9
for Chugang and Chuyeong, and 2.0
for Sumi, and EC which decreased 50% of dry weight index was 2.4 dS
for Chubaek, 2.45 dS
for Chudong, 2.81 dS
for Chugang, 3.03 dS
for Chuyeong, and 3.29 dS
for Sumi. The present results suggest that Sumi is considered to the suitable potato variety grown on saline soils.
Inheritance of Tolerance of Maize Inbreds to Exserohilum turcicum in North Korea
Kim, Soon-Kwon ; Lee, Duk-Kyu ; Lee, Joon-Ho ; Jeong, Jae-Bong ; Nwe, Win-Win ; Han, Hyoung-Jai ; Lee, Kwang-Soo ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 91~106
DOI : 10.7740/kjcs.2013.58.2.091
Exserohilum turcicum is considered serious destructive disease of maize (Zea mays L.) in North Korea. This study aimed to understand genetic inheritance and combining ability of newly bred lines of maize tolerant to E. turcicum by diallel crosses. Three diallel sets for two different ecological regions and one agronomic trait; eastern (E), northern (N) and stay green (SG) involving 29 inbred lines were tested in eight locations of 2000 and 2001. E. turcicum infections were under natural conditions, respectively. Lines used were selected for high yield potential in test crosses with good agronomic traits and tolerance to biotic and abiotic stresses. Selection for race specific high resistance to biotic stresses was avoided to select quantitatively inherited genes. Host plant responses to E. turcicum were rated on a scale of 1 (highly tolerant) to 9 (highly susceptible). Highly significant variations were recorded in all trials. General combining ability (GCA) mean square was roughly twice that of specific combining ability (SCA). The genotype (G) by environment (E) interaction was highly significant. The overall results of genetic studies in three diallel sets show that genetic control for inbred tolerance to E. turcicum is polygenic and quantitatively inherited. New inbreds; E-3, N-1 and SG-4 confer better tolerance to E. turcicum than the widely used inbreds; Mo17, and B73. Proper use of genetic information from this study shall increase of corn production under high E. turcicum infection in the Far Eastern Regions of Korea and China.
Study on Improving High-temperature Tolerance for Grain Filling Through Adjusting Sink Size
Kim, Junhwan ; Shon, Jiyoung ; Choi, Kyung-Jin ; Yoon, Younghwan ; Lee, Chung-Kuen ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 107~112
DOI : 10.7740/kjcs.2013.58.2.107
The aim of this study was to test hypothesis that low sink size could mitigate deterioration of grain filling characteristics under high grain filling temperature. To achieve this aim, we selected Donganbyeo as a tolerant and Ilpumbyeo as susceptible variety to high temperature during grain filling period through screening 6 rice varieties. Then their spikelets number and the ratio of superior and inferior spikelet were compared. Grain weight and head rice ratio of Ilpumbyeo decreased significantly in high temperature. Ilpumbyeo had more spikelets than Donganbyeo. However, there was no significant difference between two varieties in the ratio of superior and inferior spikelets. So we tried to investigate the varietal difference of grain filling characteristics with removing inferior spikelets. Removing inferior spikelet in both of varieties could recover grain weight but not improve head rice ratio under high temperature. These results showed that sink/source ratio affected grain weight but didn't affect head rice ratio. Therefore, new approach was required to improve head rice ratio beyond sink/source ratio under high temperature.
Natural Dyeing Fabrics with Leaf and Stem of Purple Corn
Kim, Jung-Tae ; Son, Beom-Young ; Lee, Jin-Seok ; Baek, Seong-Bum ; Kim, Sun-Lim ; Kim, Mi-Jung ; Jung, Gun-Ho ; Kwon, Young-Up ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 113~118
DOI : 10.7740/kjcs.2013.58.2.113
This study was carried out to evaluate the dyeing possibility of purple corn stem and leaf. The UV absorbance of the purple corn stem extract and leaf extract at different pH does not change. It is considered to use to efficiently measure the purple corn pigment content when using UV absorbance at 520~560 nm. By adjusting higher pH values in the extraction dyed fabrics, silk and cotton fabric used by the purple corn leaf extraction decreased lightness and redness. Extent for dyeing the fabric depending on the concentration, lightness and redness showed a tendency to increase color values when silk and cotton concentration increases. Also when the longer the dyeing time, silk and cotton increased lightness but redness decreased.
Relationship of Transformation Efficiency and Metabolites Induced in Korean Soybean Cotyledons Treated with Sonication
Song, Kitae ; Yim, Won Cheol ; Jung, Gun-Ho ; Kim, Sun Lim ; Kwon, Young-Up ; Lee, Byung-Moo ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 119~127
DOI : 10.7740/kjcs.2013.58.2.119
The interaction between Agrobacterium and soybean has been studied at the transcriptome level but not at the metabolic level. However, it is necessary to investigate the difference in metabolites between susceptible and non-susceptible cultivars for high efficiency transformation. We investigated the difference in metabolites from sonicated soybean cotyledons of Korean cultivars and Bert cultivar. To identify difference in metabolites, sonicated extracts were analysed by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR/MS). The soybean cultivars were classified by susceptibility using green fluorescent protein expression. We found a difference in metabolites between the high susceptible and low susceptible cultivars. The FT-ICR/MS experimental m/z data of different metabolites were compared with theoretical m/z in KNApSAcK database. The candidate list was made using KNApSAcK and focused on phenolic compounds. These candidate metabolites are speculated to influence factors in the interaction. This list of candidates may be useful to investigate the interaction between Agrobacterium and plants to increase transformation efficiency.
Influence of Yeast-treated Rice By-products on Growth, Yield and Grain Quality of Rice
Seo, Pil Dae ; Nunez, John Paolo ; Park, Jae Sang ; Ultra, Venecio U. Jr. ; Lee, Sang Chul ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 128~135
DOI : 10.7740/kjcs.2013.58.2.128
The use of agricultural by-products as alternative nutrient sources in crop production had gained popularity in order to reducing the rate of chemical fertilizer application in the field. This study was conducted to determine whether the application of rice milling by-products treated with yeast inoculants could substitute, or reduce the rate of chemical fertilizer application. The results of agronomic measurements showed that the effect of incorporated materials was not immediate, as compared to 100% chemical fertilizer application. However, grain yield and quality was either the same or greater than 100% chemical fertilizer application. It was found out that expanded rice hull (treated with yeast or not) could reduce the rate of applying chemical fertilizers by half. Also, yeast treatment was only favorable only to expanded rice hull and not with rice bran, and was already found to be a potential material in reducing chemical fertilizer application in rice production.
Desalinization of Flooding Periods and Growth of Whole Crop Barley as Early Exposure Area in 'Saemangeum' Newly Reclaimed Land
Choi, Weon-Young ; Song, Tae-Hwa ; Kim, Sun ; Lee, Jang-Hee ; Jeong, Jae-Hyeok ; Kim, Si-Ju ; Lee, Kyeong-Bo ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 136~141
DOI : 10.7740/kjcs.2013.58.2.136
This study was conducted to investigate upland crop at reclaimed sand land 'Saemangeum' for early desalination purpose and to investigate the growth and yield of whole crop barley, which was acceded after summer crop of corn and rice. Seedling establishment of whole crop barley were 216 seedlings/
(25%) for non-flooding, 43% for 1 month and 58% for 2, 3 month flooding. And it was 60% in rice cultivation. Soil salt concentration was 0.5% in non-flooding treatment, however flooding treatments decreased to 0.2% or less. In general soil salt concentration increased until the middle stage of growing, then became to similar level as the seeding time. Plant height, stem length and number of tiller were increased with flooding treatment. Whole crop barley yield was significantly reduced in non-flooding treatment but rapidly increased by flooding treatment. Yielding at 3 months increased by 504% compared to non-flooding, and rice cultivation was also increased by 536%. Protein and fiber content was low in 1 month flooding treatment, 3 months flooding and rice cultivation showed the similar results in terms of feed value. For desalination purpose in reclaimed land, 3 months flooding treatments of rice cultivation could result in higher yielding for upland crop, such as whole crop barley.
Multiplex PCR Assay for the Simultaneous Detection of Major Pathogenic Bacteria in Soybean
Lee, Yeong-Hoon ; Kim, Nam-Goo ; Yoon, Young-Nam ; Lim, Seung-Taek ; Kim, Hyun-Tae ; Yun, Hong-Tae ; Baek, In-Youl ; Lee, Young-Kee ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 142~148
DOI : 10.7740/kjcs.2013.58.2.142
Bacterial diseases in soybean are bacterial pustule by Xanthomonas axonopodis pv. glycines, wildfire by Pseudomonas syringae pv. tabaci, bacterial blight by Pseudomonas savastanoi pv. glycines and bacterial brown spot by Pseudomonas syringae pv. syringae in Korea. It is difficult to identify each disease by early symptoms in fields, because the initial symptoms of these diseases are very similar to each other. In this study, we developed multiplex PCR detection method for rapid and accurate diagnosis of bacterial diseases. The glycinecin A of X. axonopodis pv. glycines, the tabtoxin of P. syringae pv. tabaci, the coronatine of P. savastanoi pv. glycines and the syringopeptin of P. syringae pv. syringae have been reported previously. These bacteriocin or phytotoxin producing genes were targeted to design the specific diagnostic primers. The primer pairs for diagnosis of each bacterial diseases were selected without nonspecific reactions. The studies on simultaneous diagnosis method were also conducted with primarily selected 21 primers. As a result, we selected PCR primer sets for multiplex PCR. Sizes of the amplified PCR products using the multiplex PCR primer set consist of 280, 355, 563 and 815 bp, respectively. This multiplex PCR method provides a efficient, sensitive and rapid tool for the diagnosis of the bacterial diseases in soybean.
Isolation of Isoflavones and Soyasaponins from the Germ of Soybean
Kim, Sun-Lim ; Lee, Jae-Eun ; Kim, Yul-Ho ; Jung, Gun-Ho ; Kim, Dea-Wook ; Lee, Choon-Ki ; Kim, Mi-Jung ; Kim, Jung-Tae ; Lee, Yu-Young ; Hwang, Tae-Young ; Lee, Kwang-Sik ; Kim, Wook-Han ; Kwon, Young-Up ; Kim, Hong-Sig ; Chung, Ill-Min ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 149~160
DOI : 10.7740/kjcs.2013.58.2.149
The objective of present study was to simultaneously isolate of isoflavone and soyasaponin compounds from the germ of soybean seeds. Soy germ flours were defatted with hexane for 48h at room temperature, and methanolic extracts were prepared using reflux apparatus at
for 6h, two times. After extraction, extracts were separated with preparative RP-
packing column (
), and collected 52 fractions were identified with TLC plate (Kieselgel 60 F-254) and HPLC, respectively. Among the identified isoflavone and soyasaponin fractions, isoflavone fractions were re-separated using a recycling HPLC with gel permeation column (Jaigel-W252,
). Final fractions were air-dried, and the purified compounds of two isoflavones (ISF-1-1, ISF-1-2) and four soyasaponins (SAP-1, SAP-2, SAP-3, SAP-4) were obtained. Two isoflavone compounds (ISF-1-1, ISF-1-2) were acid-hydrolyzed for the identification of their aglycones, and confirmed by comparing with 12 types of isoflavone isomers. While the four kinds of soyasaponins were identified by using a micro Q-TOF mass spectrometer in the ESI positive mode with capillary voltage of 4.5kV, and dry temperature of
. Base on the obtained results, it was conclude that ISF-1-1 is the mixture isomers of daidzin (43.4%), glycitin (47.0%), and genistin (9.6%), but ISF-1-2 is the single compound of genistin (99.8% <). On the other hand, soyasaponin SAP-1 is the mixture compounds of soyasaponin A-group (Aa, Ab, Ac, Ae, Af); SAP-2 is soyasaponin B-group (Ba, Bb, Bc) and E-group (Bd, Be); SAP-3 is soyasaponin B-group (Ba, Bb, Bc), E-group (Bd, Be), and DDMP-group (
); SAP-4 is soyasaponin B-group (Ba, Bb, Bc), E-group (Bd, Be), and DDMP-group (
Investigation of Soybean Cyst Nematode Heterodera Glycines Type and Evaluation of Resistance on Soybean Varieties and Germplasms in Korea
Kim, Myung-Sik ; Sung, Mi-Kyung ; Kim, Min-Whan ; Seo, Hyung-Jin ; Kim, Dong-Geun ; Chung, Jong-Il ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 161~168
DOI : 10.7740/kjcs.2013.58.2.161
Soybean cyst nematode (Heterodera glycines Ichinohe) is one of the serious soybean [Glycine max (L.) Merr.] pests in major soybean producing countries. The objective of this study was to investigate of Heterodera glycines type using the five SCN infested soybean field soils and was to evaluate resistance to the soybean cyst nematode HG 2.5.7 type on soybean varieties and germplasms. The five SCN contaminated soil samples were collected from the three provinces on November 2011 in Korea, and eggs were cultured on early spring season in 2012. For the second study, a total fifty nine soybean varieties and germplasms were tested by infestation of HG type 2.5.7 in the greenhouse. Soybean cyst nematode HG types were investigated from five locations, HG 2 (race 1) type at Donghae, HG 2.5 (race 1) type at Jeongseon and Hapcheon, HG type 2.5.7 (race 1 or 5) at Yeongwol, and HG 1.2.7 (race 5) type at Haenam locations in present study. No Korean soybean varieties and germplasms were observed with SCN resistant trait to the HG type 2.5.7. Average SCN female index were calculated with 82.7% in 59 plant materials. Our results could be provided useful information to develop a SCN resistant cultivar in Korea.
Effect of Additional Nitrogen Fertilizer Application on Decreasing of Preharvest Sprouting in Winter Wheat
Kim, Young-Jin ; Kim, Hag-Sin ; Kang, Cheon-Sik ; Kim, Kyoung-Hun ; Hyun, Jong-Nae ; Kim, Kee-Jong ; Park, Ki-Hun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 169~176
DOI : 10.7740/kjcs.2013.58.2.169
Preharvest sprouting seriously reduces milling and baking quality of hard winter wheat (Triticum aestivum L.) grain. To determine the effect of nitrogen fertilizer application on decreasing of preharvest sprouting, several levels of N-fertilization were conducted in two winter wheat cv. Keumkang and Jokyung, grown in Iksan. Nitrogen fertilization is used to increase grain yield and protein content. Grain yield increased at 108kg/ha (50% increased nitrogen to the standard) application and decreased as more nitrogen was applied. There was a linear increase in grain protein contents with increasing level of nitrogen application. Germination rate, germination index and ABA sensitivity were gradually reduced by increasing of nitrogen application level. Preharvest sprouting showed a significantly correlation to germination rate but could not be correlated to protein content and falling number. A significant positive correlation was detected between preharvest sprouting and different additional nitrogen fertilizer levels.
Changes of Fresh Leaf Yield and Colorant Level with Different Transplanting and Harvest Time in Persicaria tinctoria H. Gross
Ko, Jae-Hyung ; Kim, Seong-Ju ; Lee, Hoo-Kwan ; Kim, Kwan-Su ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 177~184
DOI : 10.7740/kjcs.2013.58.2.177
This study was conducted to determinate the optimum times of transplanting and harvest for enhancing the fresh leaf yield and colorant level of an indigo crop, Persicaria tinctoria H. Gross, containing the blue dye indigo. Two cultivars, Naju Local and a new cultivar, NaramBlue, were transplanted 5 times from May 30 to July 10 at an interval of 10 days, and all of experiment plots harvested on Aug. 23 in Muan, the south area of Korea. As transplanting time was delayed, fresh leaf yield were maximum at earliest transplanting (May 30) and then decreased, while Niram (blue dye extract) and indigo content of fresh leaf remained almost constant though showed a small variation. Also, two cultivars transplanted on May 23 were harvested 5 times from Jul. 20 to Sept. 20 at an interval of 15 days. As harvest time was delayed, plant height, No. of first branches, and fresh leaf yield changed increasingly, while Niram content was increased to Aug. 20 and then decreased slightly. Indigo level increased largely to Aug. 5, and then continuously decreased with more delayed harvest. These tendencies of changes in fresh leaf yield and colorant level with different transplanting and harvest times were shown similarly in both cultivars. The results indicate that early transplanting before May 30 and harvest in early August will be appropriate for improving fresh leaf yield and colorant level.
Grain Quality of New Large-Grain Pigmented Rice Variety, "Daeripjamibyeo"
Ryu, Su-Noh ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 185~189
DOI : 10.7740/kjcs.2013.58.2.185
Daeripjami, a novel black rice variety developed by conventional breeding has high contents of Cyanidin-3-glucoside(C3G) and a more strong antioxidant than normal black rice. This study aimed at informing ordinary people of the superiority of Daeripjami, a variety of rice proven to be superb physiologically and valuable as natural coloring, and making it popular by examing the physicochemical features of the rice. Recently, an increasing number of people in modern society are suffering from various adult diseases and atopic diseases. Therefore, in order to resolve the problem by making people consume more C3G, the main coloring contained in functional rice Daeripjami. The general components of Daeripjami, Superjami, Heugjinju and Ilpum were compared, As for water content, Ilpum took first place, followed by Heugjinju, Daeripjami and Superjami, As for crude protein and fat content, Heugjinju was highest, followed by Daeripjami, Superjami and Ilpum. This indicated that Daeripjami likely has better cooking qualities than Heugjinju. Amylose content turned out to be related with the volume, stickness and retrogradation of cook rice. As Heugjinju contained more amylose than Daeripjami, the latter was expected to have better eating quality than the former. The 1000 grain weight of daeripjami was 1.67 times heavier than that of Heugjinju. The C3G content of Daeripjami is 3.49 times higher compared with that of Heugjinju. As for total polyphenol and electron donating ability, Daeripjami was high in physiological functionality.
Differences in Flood-Stress Tolerance among Sprout Soybean Cultivars
Cho, Jin-Woong ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 190~195
DOI : 10.7740/kjcs.2013.58.2.190
In this study, the response of 22 soybean cultivar sprouts to flooding stress was investigated. After sprouts were subjected to flooding stress for 10 days at the V4-V5 growth stages, their dry weights were compared. All plants were kept in a greenhouse under natural light conditions, an average daytime temperature of
and an average nighttime temperature of
. Soybeans were grown in a concrete bed filled with silt loam soil. Subjecting plants to flooding stress resulted in a large reduction in plant dry weight, plant height, number of nodes, and number of leaves. Cultivars differed significantly in their responses to flooding stress, as indicated by these characteristics (p<0.05). Soybean cultivars were classified into three groups based on their degree of flood tolerance: strong, moderate, and weak. Hannamkong, Namhaekong, Sobaegnamulkong, and Sorogkong had strong tolerance for flood conditions. Tawonkong, Pureunkong, Eunhakong, Myeongjunamulkong, Doremikong, Saebyeolkong, Paldokong, Sowonkong, Pungsannamulkong, Dagikong, Dachaekong, and Anpyeongkong had weak tolerance for flood conditions.
Evaluations on agronomic traits of rice transgenic lines
Jeong, Jong-Min ; Jeung, Ji-Ung ; Kang, Kyung-Ho ; Lee, Sang-Bok ; Park, Hyang-Mi ; Kim, Chung-Kon ; Kim, Kyung-Min ; Sohn, Jae-Keun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 196~202
DOI : 10.7740/kjcs.2013.58.2.196
This study was conducted to evaluate the performances of rice transgenic lines along with their wild types in terms of agronomic traits. A total of 32 rice transgenic lines, through previously conducted collaborative researches between molecular biologists and conventional rice breeders, were selected as promising lines. As the introduced functional genes, 17 genes, which were putatively related with high yield, disease and herbicide resistance, abiotic stress tolerance, and diversifying endosperm starch components, were transformed into three Japonica cultivars, Nipponbare, Nagdongbyeo, and Dongjinbyeo. The transgenic lines exhibited significantly deviated performances from their wild types on agronomic traits such as days to heading, culm length and yield potential. Multivariate analyses on transgenic lines to the evaluated agronomic traits also indicated random manner of phenotypic deviations from their wild type in terms of deviation directions and degrees. Our results suggested that, therefore, breeding strategies to control unexpected deleterious phenotypic performances among transgenic lines would be critical as much as the functions and proper expressions of the transformed genes.
Studies on the Grain Quality Characteristics of Rice Transgenic Lines
Jeong, Jong-Min ; Jeung, Ji-Ung ; Kang, Kyung-Ho ; Lee, Sang-Bok ; Mo, Young-Jun ; Kim, Chung-Kon ; Kim, Kyung-Min ; Sohn, Jae-Keun ;
KOREAN JOURNAL OF CROP SCIENCE, volume 58, issue 2, 2013, Pages 203~211
DOI : 10.7740/kjcs.2013.58.2.203
Selected 11 rice transgenic lines, through preliminary yield trials on 32 lines, were evaluated on important agronomic traits as well as grain quality by conducting replicated yield trials having three replication plots. Japonica recipients, Nipponbare, Nagdongbyeo, and Dongjinbyeo, were the recipients of 7 transformed genes, which were putatively related with high yield, abiotic stress tolerance, and disease resistance. To estimate the degrees of deviations from the wild types, 11 traits of transgenic lines, relating with grain quality were evaluated and subjected to multivariate analyses. Principal coordinate and clustering analyses did not support collection manners of transgenic lines in terms of the genes transformed as well as the genetic background. Meanwhile, some transgenic lines would be acceptable due to their over-all performances were similar to their wild types, it was hardly possible to declare any transgenic line, which adhered closely to the commercial profits of wild type. Thereby, with considerations on the demanding resources in establishing rice transgenic lines having market competitiveness, it was speculated that proper application of breeding strategies would be crucial factor for the efficiency of developing prospective rice transgenic lines.