一些小麦品种主要株型指标的初步分析

PRELIMINARY ANALYSIS OF IMPORTANT PHENOTYPE TRAITS OF SOME WHEAT VARIETIES (LINES)

对25个小麦品种(系)的11个株型指标进行了测定,并对测定结果进行了初步分析。结果表明:①根据11个株型指标可将25个品种(系)分为4类,第1类表现为秆高、穗下节间长、剑叶角和剑叶披垂度大,但有效小穗数和总小穗数最低;第4类表现为剑叶角和剑叶披垂度较小,有效分蘖数、总小穗数和有效小穗数均最高;另外两类的大多数性状介于第1类和第4类之间。②仅根据4个穗部性状,也可将25个品种(系)分为4类,但分类结果与根据11个株型指标的结果有所不同。③穗下节间长度与株高、有效小穗数与剑叶宽、剑叶披垂度与剑叶长和叶基角均呈极显著正相关。

Eleven phenotypic traits of 25 wheat varieties (lines) were measured. On the basis of these traits, these varieties (lines) were analyzed. The results were as follows:① 25 varieties (lines) were clustered into 4 different groups, group 1 with higher plant height, longer internode next to the ear, larger angle between flag leaf base and the top stem and angle between flag tip and the top stem, less gross spikelets and productive ones; group 4 with smaller angle between flag leaf base and the top stem and angle between flag leaf tip and the top stem, more gross spikelets and productive ones; the most traits of the other 2 groups between group 1 and group 4. ② On the basis of 4 spike traits, these varieties (lines) could also be clustered into 4 different groups, which differed from above.③ The internode length next to the ear and plant height, productive spikelets and the flag leaf width, the angle between flag leaf tip and the top stem, the flag leaf length, angle between flag leaf base and the top stem were all significantly positively correlated.