摘要
对1983～1988年贵阳地区54份小麦新品种(系)主要农艺性状的研究表明,该地区小麦产量与穗粒数、千粒重、穗粒重呈极显著正相关,相关系数分别为0.7840、0.7688、0.8685。超标品种(系)产量比对照增高35.58％,亩穗数与对照基本相同,株高比对照有所下降,穗粒数、千粒重、穗粒重比对照分别增加12.8％,9.2％,21.1％,因此在该地区提高小麦品种产量潜力,应稳定现有亩穗数,适当降低株高,着重提高对穗粒重的选择,即增加穗粒数从选育多花多实品种,增加千粒重以选育大穗大粒品种。同时进行千粒重与穗粒数的综合选择能提高单稳粒重,达到增产目的。
The analysis on main agronomic characters of high-yielding wheat varieties from 1983 to 1988 in Guiyang area showed that yield was significantly correlated with kernel number per spike(r = 0.7840''),thousand kernel weight (r = 0.7688'), kernel weight per spike(r = 0.8685). As compared with check the high-yielding variety yield had increased by 35.58%. Tne ear number per mu was the same as check and the plant height was a little lower than CK.The kernel number per spike, the thousand kernel weight and the kernel weight per spike of high-yielding variety had increased in order by 12.8%, 9.2%, 21.1% in comparison with CK. Therefore for promoting wheat yield in this area,it is necessary to increase the selection of kernel weight per spike, as well as to keep the present ear number per mu and lower the .plant height. Two ways could be used to increase the kernel weight per spike, one was more kernel number selection,the other larger ear and kernel selection.Comprehensive selection could effectively increase kernel weight per spike.
出处
《贵州农业科学》
CAS
1991年第2期31-34,共4页
Guizhou Agricultural Sciences
关键词
小麦
高产
品种
农艺性状
Comprehensive selection
kernel weight per spike
High-yielding variety
