四川盆地小麦高产育种若干问题的探讨  

Issues and strategies for Wheat High Yield Breeding in Sichuan Basin

作　　者：宋荷仙[1] 伍玲[1] 朱华忠[1] 

机构地区：[1]四川省农科院作物所

出　　处：《西南农业学报》1998年第S2期30-33,共4页Southwest China Journal of Agricultural Sciences

摘　　要：回顾了六十年代以来，四川盆地小麦高产育种取得的成绩，指出单产的提高主要得益于穗粒数和千粒重的增加。收获指数的改良也很显著。分析了当前小麦高产育种面临的问题并提出了三条进一步提高小麦品种产量潜力的对策。１．在一定穗数基础上，适当增加小穗数；２．改善株型结构，提高群体光能利用率；３．提高生物产量和收获指数。还对公顷产量达７５００ｋｇ的小麦品种的生长发育特性、形态结构和产量结构提出了设想。This paper reviewed the advancement of high yield breeding for wheat in Sichuan basin since 1960, and indicated that the increase of per hectare yield was mainly due to the improvement of grains per spike and 1000 grain weight. Harvest index was also improved impressively. After analysis of the issues that wheat breeding is facing at present, three strategies on high yield breeding were suggested. i.e. increasing spikelets properly on the base of sufficient ear quantity, improving the structure of plant type so to increase the utilization efficiency to sun light, increasing biomass and harvest index simultaneously. Some tentative ideas for the vegetative development, structure of plant type and yield components to varieties with over 7500kg/ha of yield potency were come out.

关 键 词：四川 小麦 育种 探讨 

分 类 号：S512.1[农业科学—作物学]