摘要
用不同胞质群的8个不育系及5个恢复系组成可能恢复的24个杂交组合,两年多点分期播种观察花粉育性,结果表明,1)胞质群内组合间的恢复性与环境的互作存在极显著差异。2)不同生态气候条件对恢复性影响不一,凉爽、高湿比高温、干燥更有利于雄性的恢复,适度光照有助于提高恢复性。同一生态区内,年份间恢复性差异不大。3)恢复性与稳定性之间存在着密切相关性,尤其E 群表现更突出。恢复性越高,播期间稳定性越好。4)自330对C、E 两亚群不育系的恢复性差,是因为其不具有恢复性的遗传基础。所以,在利用不育胞质杂种时,必须对恢复系的恢复性进行测定与选纯。
24 corn hybrids selected from the crosses between 8 CMS lines & 5
restoring lines with different cytoplasms were planted in 1988 & 1989.The re-
sults of pollen fertility observed showed :1)High significant difference existed
in restorer fertility of the interactions between cross and environment.2)Ef-
fects on the restorer fertility varied with environment.Cool and high moisture
were more beneficial to the male fertile restoration than high temperature
and dry weather.Appropriate sunlight was helpful to increasing the restora-
bility.3)There was close relation between restorability and stability,espe-
cially in E-type cytoplasm.The higher the restorability,the better the sta-
bility in planting date.4)Zi-330 had poor restorability for C and E sub-
group due to the lack of powerful genetic base.Therefore restorability test &
pure selection of restorers should be conducted during the utilization of CMS
hybrids.
出处
《河南农业大学学报》
CAS
CSCD
1992年第1期1-8,共8页
Journal of Henan Agricultural University
基金
河南省自然科学基金
关键词
玉米
恢复度
环境
细胞质
雄性不育
maize
cytoplasmic male sterility(CMS)
restorability
environment
