水稻穗部性状与茎叶性状的关系

Relationships between Panicle Traits and Yield Components in Rice

以沈农265等33个辽宁省主栽品种及区域试验品种(品系)为试材,研究穗部性状与茎叶性状关系的结果表明,单株有效穗数与多数穗部性状呈极显著负相关,而每穗粒数与多数穗部性状呈极显著正相关,剑叶长与单株有效穗数呈显著负相关,剑叶和倒2叶鞘长与一次枝梗数、一次枝梗饱粒数、着粒密度呈极显著负相关,倒1节间与一次枝梗数、一次枝梗饱粒数、着粒密度呈显著负相关,倒3节间长与单株有效穗数呈显著正相关.

<Abstrcat>Using the main varieties and region test ones altogether 33 rice varieties of LiaoNing province, the relationships between panicle traits and yield components were analyzed.The results showed that grain yield was closely correlated with panicle numbers,grains/panicle and spike setting density affect grain yield significantly, because panicle numbers and grains/panicle contributed to yield improvement while spike setting density have a negative effect on it.