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Weixian Liu Moon Young Kim Kyujung Van Yeong-Ho Lee Hulin Li Xianhu Liu Suk-Ha Lee 《Journal of Crop Science and Biotechnology》2011,14(1):65-70
Two soybean recombinant inbred line populations, Jinpumkong 2 × SS2-2 (J × S) and Iksannamulkong × SS2-2 (I x S) showed population-specific
quantitative trait loci (QTLs) for days to flowering (DF) and days to maturity (DM) and these were closely correlated within
population. In the present study, we identified QTLs for six yield-related traits with simple sequence repeat markers, and
biological correlations between flowering traits and yield-related traits. The yield-related traits included plant height
(PH), node numbers of main stem (NNMS), pod numbers per plant (PNPP), seed numbers per pod (SNPP), 100-seed weight (SW), and
seed yield per plant (SYPP). Eighteen QTLs for six yield-related traits were detected on nine chromosomes (Chrs), containing
four QTLs for PH, two for NNMS, two for PNPP, three for SNPP, five for SW, and two for SYPP. Two highly significant QTLs for
PH and NNMS were identified on Chr 6 (LG C2) in both populations where the major flowering gene, E1, and two DF and DM QTLs were located. One other PNPP QTL was also located on this region, explaining 12.9% of phenotypic
variation. Other QTLs for yield-related traits showed population-specificity. Two significant SYPP QTLs potentially related
with QTLs for SNPP and PNPP were found on the same loci of Chrs 8 (Satt390) and 10 (Sat_108). Also, highly significant positive
phenotypic correlations (P < 0.01) were found between DF with PH, NNMS, PNPP, and SYPP in both populations, while flowering was negatively correlated
with SNPP and SW in the J × S (P < 0.05) and I × S (P < 0.01) populations. Similar results were also shown between DM and yield-related traits, except for one SW. These QTLs identified
may be useful for marker-assisted selection by soybean breeders. 相似文献
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Moon Young Kim Bo-Keun Ha Tae-Hwan Jun Eun-Young Hwang Kyujung Van Yong In Kuk Suk-Ha Lee 《Euphytica》2004,135(2):169-177
Lipoxygenase-2 (Lx
2) in soybean seed is mainly responsible for generation of grassy-beany and bitter flavors. Genetic elimination of this flavor
can be accelerated by the development of single nucleotide polymorphism (SNP) markers linked to Lx
2. A frame map based on simple sequence repeat (SSR) markers was constructed first using a recombinant inbred line (RIL) population
of Pureunkong × Jinpumkong 2. Sixty-five SSR markers were incorporated into 13 linkage groups (LGs) spanning a total of 737
cM. Among five primer pairs designed from the Lx
2 gene sequence, one produced an amplicon with sequence variations between Pureunkong and Jinpumkong 2. Three SNPs, T/C, G/A
and C/A, were identified at 251,367 and 420 bp, respectively, in the intron region of the 804 bp amplified product. Using
single base chain extension based on the capture probe sequence in the 5' region of the T/C SNP, the 90 RILs were genotyped
for each allele of Lx
2. The allelic segregation for the SNP linked toLx
2 was in accordance with the expected ratio of 1:1 in the RIL population. Based on the results of linkage analysis between
Lx
2 and the SSR markers, Lx
2 was found to be positioned on one end of LG F in the frame map, flanked by the SSR markers Satt522 and Sat074. This study
demonstrates that SNP markers closely linked to Lx
2can be developed to facilitate marker-assisted selection and fine mapping of the region around this locus.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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Oliya Bal Kumari Kim Moon Young Ha Jungmin Lee Suk-Ha 《Genetic Resources and Crop Evolution》2022,69(3):1313-1327
Genetic Resources and Crop Evolution - Lactuca indica L. is an undomesticated medicinal crop in the Asteraceae family. The study was carried out to identify elite genotypes for lettuce cultivation... 相似文献
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Sung-Taeg Kang Myounghai Kwak Hyeun-Kyeung Kim Myoung-Gun Choung Won-Young Han In-Youl Baek Moon Young Kim Kyujung Van Suk-Ha Lee 《Euphytica》2009,166(1):15-24
Pod dehiscence (PD) prior to harvest results in serious yield loss in soybean. Two linkage maps with simple sequence repeat
(SSR) markers were independently constructed using recombinant inbred lines (RILs) developed from Keunolkong (pod-dehiscent) × Sinpaldalkong
(pod-indehiscent) and Keunolkong × Iksan 10 (pod-indehiscent). These soybean RIL populations were used to identify quantitative
trait loci (QTLs) conditioning resistance to PD. While a single major QTL on linkage group (LG) J explained 46% of phenotypic
variation in PD in the Keunolkong × Sinpaldalkong population with four minor QTLs, three minor QTLs were identified in the
Keunolkong × Iksan 10 population. Although these two populations share the pod dehiscent parent, no common QTL has been identified.
In addition, epistatic interactions among three marker loci partially explained phenotypic variation in PD in both populations.
The result of this study indicates that different breeding strategies will be required for PD depending on genetic background. 相似文献
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Jong-Tag Youn Kyujung Van Jae-Eun Lee Sung-Kook Kim Jin Song Wook-Han Kim Suk-Ha Lee 《Journal of Crop Science and Biotechnology》2009,12(3):153-159
Increased application of nitrogen (N) fertilizer top-dressing during growth is an effective option for enhancing N supply
to soybean plants. SS2-2 was characterized by the superior ability of symbiotic N2 fixation at the level of 30 kg N ha−1. But, the response of nitrogen fixation ability of supernodulating soybean mutant, SS2-2, to N fertilizer application rate
remains unclear. The objective of this experiment was to compare the response of N fertilizer top-dressing on N accumulation
and N2 fixation between supernodulating mutant, SS2-2, and wild-type, Sinpaldalkong 2. The effect of N fertilizer top-dressing (0.6
g N pot−1 top-dressing) on the nitrogen accumulation and redistribution were compared between SS2-2 and Sinpaldalkong 2. N fertilizer
top-dressing at R1 stage increase in plant dry weight, relative growth rate (RGR), net assimilation rate (NAR), nitrogen harvest
index (NHI), and N redistribution (NR). SS2-2 showed highest N concentration, 65.0 mg N g DW−1, followed by Sinpaldalkong 2 and En1282, and the N content per plant did not show a significant difference between SS2-2
and Sinpaldalkong 2. The N2 fixation rate was significantly reduced by N top-dressing, but the amount of N2 fixation was not changed due to an improved dry weight without changes of N concentration. In addition, SS2-2 showed higher
NHI, NR and NRE than Sinpaldalkong 2. These results suggested that supernodulating soybean mutants, SS2-2, could be characterized
by high N concentration and N2 fixation regardless of N fertilizer top-dressing due to a higher nitrate tolerance of supernodulating mutants than that of
wild-type. 相似文献
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Sung-Il Kim Moon Young Kim Kyujung Van Yeong-Ho Lee Hong Sig Kim Chun Mei Cai Bong-Soo Park Hak-Soo Seo Suk-Ha Lee 《Euphytica》2011,177(3):355-363
The development of soybean varieties that lack the β-conglycinin α′ subunit is an attractive goal because the β-conglycinin
α′ subunit exerts a negative influence on nutrition and tofu gelation, and is also a major allergen. We sought to develop
a co-dominant DNA marker for the β-conglycinin α′ subunit (Cgy-1) gene for use in marker-assisted selection (MAS). We identified a deleted sequence responsible for the null allele of Cgy-1 in a soybean variety lacking the β-conglycinin α′ subunit known as ‘Keburi’. The deletion spanned 12,998 bp and included
Cgy-1 and its incomplete tandem duplicate on chromosome 10. Based on the Cgy-1 sequence from both the Williams 82 soybean reference sequence and the Keburi variety, a set of three allele-specific primers
was designed for multiplex PCR assay. These primers enabled allelic discrimination by the sizes of PCR products. This amplified
two distinct DNA fragments of 913 and 649 bp in Williams 82 and Keburi, respectively. The practicality of the developed co-dominant
marker for Cgy-1 was also confirmed by amplification in five other soybean varieties including three wild types and two mutants. The heterozygosity
of the F1 plants at the Cgy-1 locus was ascertained using our novel co-dominant marker. This PCR-based co-dominant marker is capable of detecting the presence
or absence of β-conglycinin α′ subunit for soybean marker assisted breeding system. 相似文献