scholarly journals Mapping developmental QTL for plant height in soybean [Glycine max (L.) Merr.] using a four-way recombinant inbred line population

PLoS ONE ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. e0224897 ◽  
Author(s):  
Hong Xue ◽  
Xiaocui Tian ◽  
Kaixin Zhang ◽  
Wenbin Li ◽  
Zhongying Qi ◽  
...  
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Inbred Line ◽  
Recombinant Inbred Line ◽  
Recombinant Inbred Line Population ◽  
Recombinant Inbred ◽  
Glycine Max L

scholarly journals Quantitative Trait Loci (QTL) that Underlie SCN Resistance in Soybean [Glycine max (L.) Merr.] PI438489B by ‘Hamilton’ Recombinant Inbred Line (RIL) Population

2017 ◽  
Vol 1 (3) ◽  
pp. 29-38 ◽  
Author(s):  
Kassem My Abdelmajid ◽  
Laura Ramos ◽  
David Hyten ◽  
Jason Bond ◽  
Abdelhafid Bendahmane ◽  
...  
Keyword(s):  
Glycine Max ◽  
Quantitative Trait Loci ◽  
Inbred Line ◽  
Recombinant Inbred Line ◽  
Quantitative Trait ◽  
Recombinant Inbred ◽  
Interval Mapping ◽  
Trait Loci ◽  
Glycine Max L ◽  
Scn Resistance

Soybean cyst nematode caused by Heterodera glycines Ichinohe is the most devastating pest in soybean [Glycine max (L.) Merr.]. Resistance to SCN is complex, polygenic, race and cultivar specific, and it is controlled by several quantitative trait loci (QTL). Our objective was to identify and map QTL for SCN resistance to races 3 (HG Type 0) and 5 (HG Type 2.5.7) using a high density SNP-based genetic linkage map based on the PI438489B by ‘Hamilton’ (PIxH, n=50) recombinant inbred line population. The PI438489B by Hamilton map contained 648 SNPs distributed on 31 LGs with coverage of 1,524.7 cM and an average distance of 2.35 cM between two markers (Kassem et al., 2011). Using interval mapping (IM) and composite interval mapping (CIM), eight QTL were identified for SCN resistance to races 3 and 5 on 7 different soybean chromosomes. Four QTL for resistance to SCN race 3 were identified and mapped on chromosomes 7, 13, 15, and 16. Similarly, four QTL for resistance to SCN race 5 were identified and mapped on chromosomes 5, 8, and 11. The QTL identified here will be highly beneficial in breeding programs to develop cultivars with resistance to both SCN races 3 and 5.

scholarly journals Genetic Analysis of Relative Water Content (RWC) in Two Recombinant Inbred Line Populations of Soybean [Glycine max (L.) Merr.]

2017 ◽  
Vol 1 (2) ◽  
pp. 46-53
Author(s):  
Salvador Virginia ◽  
Megan Pagan ◽  
Melissa Cooper ◽  
Stella K. Kantartzi ◽  
David A. Lightfoot ◽  
...  
Keyword(s):  
Glycine Max ◽  
Water Content ◽  
Water Deficit ◽  
Inbred Line ◽  
Recombinant Inbred Line ◽  
Recombinant Inbred ◽  
Relative Water Content ◽  
Ril Population ◽  
Relative Water ◽  
Glycine Max L

Drought affects soybean [Glycine max (L.) Merr.] and other crops productivity in the US and other parts of the world. Relative water content (RWC) is an important indicator for plant water deficit tolerance (WDT). The objective of this study is to map quantitative trait loci (QTL) for RWC and several other leaf traits such as leaf dry weight (LDW), leaf fresh weight (LFW), and leaf turgid weight (LTW) in two soybean recombinant inbred line (RIL) populations, one derived from a cross of ‘Essex’ and ‘Forrest’ (ExF, n=94) and the other is derived from a cross of ‘PI 438489B’ and ‘Hamilton’ (PIxH, n=50). In the PIxH RIL population, eight QTL were identified and mapped on 6 different linkage groups (LGs) of the soybean genome. No QTL for LFW were identified in this population. In the ExF RIL population, 10 QTL were identified and mapped on 5 different LGs of soybean. Chromosome 18 (LG G) contains clusters of QTL for LFW, LTW, and RWC in the ExF RIL population. This same chromosome contains a QTL for RWC in the PIxH RIL population. The QTL found here are important to be included in breeding programs for soybean water deficit tolerance (WDT).

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