摘要
转化能力性状是重要的产量能力性状之一。在2005年和2007年分别对212和191个共403个大豆品系的转化能力性状进行了研究,以确定其在育种中利用和选择方法。两年分别进行了7个和6个试验,每个试验供试材料的主要生育期类型及其变幅都不相同。结果表明:在2005年正常年份测定转化能力性状是准确的,而在2007年不正常年份所测定的结果是不准确的。在正常年份,从中晚熟到早熟4个熟组的平均转化能力依次提高。在不良年份,转化能力受抑制导致籽粒产量降低,不同熟期组间转化能力的顺位也发生异常变化。在正常年份,品种间的收获重、籽粒重、表观收获指数的变异系数较小,而茎重的变异幅度却较大;籽粒重、表观收获指数的变异系数较小,而茎重的变异幅度却较大。不正常气候条件下则有相反趋势。由于取材不同,生育期和转化能力性状间相关性有很大差异。不同试验的籽粒重与粒茎比的相关系数差异很大,达到极显著和显著水准的不到50%。实际收获指数与粒茎比的相关系数都达到了显著或极显著水平,利用粒茎比或表观收获指数作指标就可以有效地选择实际收获指数。同等成熟期材料的粒茎比变异幅度明显,在不同成熟期的材料中都可以获得高转化能力材料。筛选出一批高转化能力的种质。
Transformation ability characteristics of dry matter were one of important high-yielding traits. Two hundred and twelve soybean lines belonging to 7 maturity group in 2005 and 191 lines belonging to 6 maturity group in 2007 were adopted to investigate transformation traits of harvest weight （ HW）, seed weight （ SW ）, apparent harvest index （ AHI）, stem weight （SW） , seed- stem ratio（SSR） and actual harvest index（AHI）. The data of transformation ability were accurate in 2005 （ normal year） ,but not accurate in 2007 （arid year）. Average transformation ability of four groups from middle-late maturing to early maturing was increased in proper order in 2005. The inhibition of transformation ability led to the decrease of seed yield and the disorder of transformation ability among different maturing groups in 2007. In 2005 ,variation coefficient（CV） of HW, SW and AHI were smaller, while variation coefficient of SW was relatively bigger, and opposite trend was presented in 2007. Correlation between maturity and transformation ability varied greatly among different maturing group soybeans. CV between SW and SSR varied greatly among different maturing groups and less than fifty percent of them reached significant level ,while CV between AHI and SSR was significant. Selection for AHI using SSR or AHI was efficient. Obvious difference in SSR existed in same maturing group lines. Soybeans with high transformation ability could be obtained in different maturing period materials and germplasms with high transformation ability had been screened.
出处
《大豆科学》
CAS
CSCD
北大核心
2009年第2期233-238,共6页
Soybean Science
关键词
大豆
干物质
转化能力
Soybean
Dry matter
Transformation ability
