摘要
测定了两系法亚种间超高产杂交组合“65396” (培矮 64S/ E32 )和“650 0 2”(培矮 64S/ 9311) ,三系法亚种间超高产杂交组合“协优 930 8”和对照组合“汕优 63”的若干株型因子 ,并进行了组合间的比较。结果表明 ,“65396”和“协优 930 8”上部三叶的叶面积明显增大 ,叶角趋小 ,叶片更为挺直。“协优930 8”还表现出后期根系活力强 ,叶片光合能力强的特点。从中归纳出了单产潜力超过 12 t/ hm2
Four hybrid rice combinations, i.e. 65396 (Peiai64S/E32), 65002 (Peiai64S/ 9311), Xieyou9308 (Xieqingzao A/9308) and Shanyou63 (CK) were studied for thei r some plant type components. 65396 and 65002 were super high yielding hybrids of inter subspecies rice newly developed using two line method, and Xieyou9308 wa s one using three line method. Result showed that the uppermost three leaves i n 65396 and Xieyou9308 were more erect with narrower leaf angles than those of th e CK hybrid. At the grain filling stage, Xieyou9308 maintained strong root vigor and high net photosynthetic rate. From the results the rational model of plant type components are refined for reference of breeding of super high yielding hy brids of inter subspecies rice with yield potential over 12t/hm 2.
出处
《作物学报》
CAS
CSCD
北大核心
2000年第6期713-718,共6页
Acta Agronomica Sinica
基金
国家自然科学基金(39970448)
浙江省青年科技人才培养专项资金(RC97-20)
农业部水稻生物学重点实验室开放基金资助项目
关键词
株型因子
亚种间杂种优势
杂交水稻
Plant type components
Inter subspecies he terosis
Hybrid rice
