New Zealand Institute for Crop and Food Research Limited, Private Bag 4704, Christchurch, New Zealand.
Theor Appl Genet. 1996 Aug;93(3):431-9. doi: 10.1007/BF00223187.
Quantitative trait loci (QTLs) affecting seed weight in pea (Pisum sativum L.) were mapped using two populations, a field-grown F2 progeny of a cross between two cultivated types ('Primo' and 'OSU442-15') and glasshouse-grown single-seed-descent recombinant inbred lines (RILs) from a wide cross between a P. sativum ssp. sativum line ('Slow') and a P. sativum ssp. humile accession ('JI1794'). Linkage maps for these crosses consisted of 199 and 235 markers, respectively. QTLs for seed weight in the 'Primo' x 'OSU442-15' cross were identified by interval mapping, bulked segregant analysis, and selective genotyping. Four QTLs were identified in this cross, demonstrating linkage to four intervals on three linkage groups. QTLs for seed weight in the 'JI1794' x 'Slow' cross were identified by single-marker analyses. Linkage were demonstrated to four intervals on three linkage groups plus three unlinked loci. In the two crosses, only one common genomic region was identified as containing seed-weight QTLs. Seed-weight QTLs mapped to the same region of linkage group III in both crosses. Conserved linkage relationships were demonstrated for pea, mungbean (Vigna radiata L.), and cowpea (V. unguiculata L.) genomic regions containing seed-weight QTLs by mapping RFLP loci from the Vigna maps in the 'Primo' x 'OSU442-15' and 'JI1794' x 'Slow' crosses.
数量性状位点(QTLs)影响豌豆(Pisum sativum L.)种子重量,使用两个群体进行映射,一个是在两个栽培品种('Primo'和'OSU442-15')之间的田间生长的 F2 后代,另一个是在温室生长的来自广泛杂交的单种子衍生重组自交系(RILs),杂交亲本是一个豌豆亚种(P. sativum ssp. sativum)的系('Slow')和一个豌豆亚种(P. sativum ssp. humile)的接入物('JI1794')。这两个杂交群体的连锁图谱分别包含 199 和 235 个标记。通过区间作图、混合分离群体分析和选择性基因分型,鉴定了'Primo'x'OSU442-15'杂交种子重量的 QTLs。在这个杂交中鉴定出了四个 QTLs,显示与三个连锁群的四个区间连锁。通过单标记分析鉴定了'JI1794'x'Slow'杂交的种子重量 QTLs。证明与三个连锁群的四个区间加上三个非连锁位点连锁。在这两个杂交中,只鉴定出一个共同的基因组区域含有种子重量 QTLs。在两个杂交中,种子重量 QTLs 都映射到连锁群 III 的相同区域。通过在'Primo'x'OSU442-15'和'JI1794'x'Slow'杂交中映射来自 Vigna 图谱的 RFLP 标记,证明了在豌豆、豇豆(Vigna radiata L.)和菜豆(V. unguiculata L.)基因组区域中含有种子重量 QTLs 的连锁关系是保守的。