culm length

Three culm traits, basal culm thickness ( BCT), culm length ( CL) and culm strength ( CS), of DH lines and their parents under upland and lowland ecosystems at milk stage were studied.

在水田、旱田栽培条件下，考查了乳熟期DH系及其亲本的茎基粗、茎秆长及茎秆强度等性状。

These QTLs cause the increase of culm length, panicle length, spikelets per panicle and panicle exsertion under low temperature, showing that these QTLs are correlated with cold tolerance.

这些主效QTL在低温环境下对水稻秆长、穗长、穗粒数和穗抽出度有增效作用，与水稻耐冷性有一定的相关性。

The lodging index was significantly and positively correlated with the length of basal internodes and the culm length.

基部节间长与倒伏指数呈显著正相关；

Culm length and its CRI were affected by a few major genes, and these traits had high narrow-sense heritability.

秆长的表现型值及其CRI值受少数主效基因控制，具有较高的狭义遗传力。

The frequency of positive and negative alleles, and the proportion of dominant and recessive alleles in the parents for culm length and its CRI were equal.

亲本中控制秆长及其CRI值的正、负等位基因的频率基本相等，显隐性基因频率基本相同；

High correlations were found between internode 5 and culm length, also and plant height, culm length and plant height, spike length and kernels per spike, heading date and anthesis date.

第5节间（穗下节间）长与茎长、株高间、茎长与株高间、穗长与穗粒数间、抽穗期与开花期间，均呈高度正相关；

Under cold water stress, culm length was positively correlated with seed setting rate, while the tassel number of days and panicle exsertion were negatively correlated with seed setting rate. 5.

在冷水处理条件下结实率与杆长呈极显著正相关，与抽穗天数、抽出度呈极显著负相关。