We identified a wheat(Triticum aestivum L.) multi-pistil mutant from an F_2 breeding population in 2012, named 12 TP(three pistils in one floret). Genetic analysis showed that one dominant gene locus controlled the mu...We identified a wheat(Triticum aestivum L.) multi-pistil mutant from an F_2 breeding population in 2012, named 12 TP(three pistils in one floret). Genetic analysis showed that one dominant gene locus controlled the multi-pistil trait. Using homozygous normal and multi-pistil lines(near-isogenic lines; NILs) derived from the original mutant 12 TP, a simple sequence repeat(SSR) marker assay located the 12 TP locus on chromosome arm 2 DL. Four SSR markers were linked to 12 TP and their order was Xcfd233→Xcfd62-12 TP→Xwmc41→Xcfd168 at 15.85, 10.47, 2.89, and 10.37 cM, respectively. The average genetic expressivity of the trait ‘three pistils in one floret' was more than 98% in seven homozygous 12 TP lines; however, the average genetic expressivity in heterozygous F_1 plants was about 49%. Thus, the 12 TP is a semi-dominant gene locus, which differ from all previously reported multi-pistil mutants. Mutant 12 TP is a new useful germplasm for study of wheat floral development and for breeding of high yield wheat.展开更多
目的:探讨中国人Van der Woude综合征(VWS)的临床表型及遗传学特点。方法:先证者法收集5个VWS家系并进行口腔专科检查和家系调查,分析不同VWS家系个体或同一家系不同个体的临床表型,绘制家系图谱,明确可能的遗传方式。结果:5个VWS家系...目的:探讨中国人Van der Woude综合征(VWS)的临床表型及遗传学特点。方法:先证者法收集5个VWS家系并进行口腔专科检查和家系调查,分析不同VWS家系个体或同一家系不同个体的临床表型,绘制家系图谱,明确可能的遗传方式。结果:5个VWS家系基本符合常染色体显性遗传特征,患者多数表现为典型的VWS症状,个别患者表现为罕见的唇瘘微型。不同家系个体和同一家系的不同个体临床表型存在明显差异。结论:收集的5个家系均为常染色体显性VWS,且疾病的外显率高,表现度变异大。展开更多
基金supported by the National Science Fund of China (31571646)the Special Fund for Key Agricultural Project in Henan Province, China in 2016 (161100110400)
文摘We identified a wheat(Triticum aestivum L.) multi-pistil mutant from an F_2 breeding population in 2012, named 12 TP(three pistils in one floret). Genetic analysis showed that one dominant gene locus controlled the multi-pistil trait. Using homozygous normal and multi-pistil lines(near-isogenic lines; NILs) derived from the original mutant 12 TP, a simple sequence repeat(SSR) marker assay located the 12 TP locus on chromosome arm 2 DL. Four SSR markers were linked to 12 TP and their order was Xcfd233→Xcfd62-12 TP→Xwmc41→Xcfd168 at 15.85, 10.47, 2.89, and 10.37 cM, respectively. The average genetic expressivity of the trait ‘three pistils in one floret' was more than 98% in seven homozygous 12 TP lines; however, the average genetic expressivity in heterozygous F_1 plants was about 49%. Thus, the 12 TP is a semi-dominant gene locus, which differ from all previously reported multi-pistil mutants. Mutant 12 TP is a new useful germplasm for study of wheat floral development and for breeding of high yield wheat.
文摘目的:探讨中国人Van der Woude综合征(VWS)的临床表型及遗传学特点。方法:先证者法收集5个VWS家系并进行口腔专科检查和家系调查,分析不同VWS家系个体或同一家系不同个体的临床表型,绘制家系图谱,明确可能的遗传方式。结果:5个VWS家系基本符合常染色体显性遗传特征,患者多数表现为典型的VWS症状,个别患者表现为罕见的唇瘘微型。不同家系个体和同一家系的不同个体临床表型存在明显差异。结论:收集的5个家系均为常染色体显性VWS,且疾病的外显率高,表现度变异大。
