摘要
选用ＣＩＭＭＹＴ选育的普通小麦（Ｔ．ａｅｓｔｉｖｕｍＬ．）高代品系多小穗（结实小穗为２９—３３个）及普通（结实小穗为２２—２９个）品系９３个材料，分析了产量因子和品质指标之间的相关关系。结果表明，除高分子量（ＨＭＷ）谷蛋白亚基组成与ＳＤＳ沉淀值之间存在极显著正相关关系外，结实小穗与ＳＤＳ沉淀值及ＨＷＭ谷蛋白亚基组成、千粒重与ＳＤＳ沉淀值及ＨＭＷ谷蛋白亚基组成之间均无显著相关关系，即产量因子与加工品质之间无紧密联系；ＨＭＷ谷蛋白亚基与多小穗性状的效应分析表明，控制ＨＭＷ谷蛋白亚基基因与多小穗基因之间无紧密连锁关系；实际育种中重视产量性状选育，相对忽视品质性状选育是多小穗品系中正效应亚基频率下降，负效应亚基频率上升的可能原因。
The 93 advanced lines of more spikelet(29 33)and common lines(22 29)from CIM-MYT yield test of winter hexaploid wheat in 1994 were studied from spikelets, 1000 kernel weight ,high molecular weight subunit compositions,SDS micro sedimentation test(MST)and their relations.Highly significant positive correlation between Glu 1 quality score and MST,no significant correlations between spikelets and Glu 1 quality score,spikelets and MST, 1000 kernel weight and Glu 1 quality score, 1000 kernel weight and MST.The results of effectsof individual subunit of HMW glutenin to spikelets and 1000 kernel weight suggest no likagemore spikelet with positive effect subunits of HMW glutenin.But in practical breeding pro-gram, yield selections are paid more attention and result in decreasing of frequencies of positive effect subunits of HMW gluteninin in more spikelet wheat.
出处
《西北植物学报》
CAS
CSCD
北大核心
1995年第4期265-269,共5页
Acta Botanica Boreali-Occidentalia Sinica
