不同蛋白质含量类型小麦的茎型指标分析

为给优质高产小麦的育种和栽培建立茎型指标体系,2002～2003年度和2003～2004年度分别以不同蛋白质含量类型的小麦品种(系)71个和94个为供试材料,测定了株高、各节间长度、籽粒蛋白质含量和产量,研究了不同蛋白质含量类型小麦的株高和各节间长度等茎部性状的差异及其与产量的关系.结果表明,高蛋白质含量类品种的株高、倒2节间长和倒3节间长显著大于低蛋白质含量类型品种;高蛋白高产类型小麦的适宜株高、穗下节间长、倒2节间长和倒3节间长分别为85～107 cm、27 cm 以上、23 cm左右和14 cm左右,在适宜范围内以各项值稍大较为理想;低蛋白质含量、高产类型的品种则分别为85 cm以下、30 cm 以下、18.5 cm左右和12 cm左右,在适宜范围内各项值以稍小较为理想.

Stem Type Indices of Wheat with Different Protein Content

Seventy one and ninety four wheat varieties with different grain protein content were planted in 2002-2003 and 2003-2004 respectively to study the relationship of plant height and the length of each internode to grain protein content and yield.The results showed that there was significant difference in plant height,the length of penultimate internode and the 3rd internode from top between varieties with high protein content and those with low protein content.The ideal plant height for varieties with high grain protein content and high yield should range from 85 to 107 cm,and the length of peduncle,penultimate internode and 3rd internode from top should be more than 27 cm,around 23 cm and 14 cm respectively,the longer the better in the range above;whereas for varieties with low grain protein content and high yield the ideal plant height and the length of peduncle,penultimate internode and 3rd internode from top should be less than 85cm,30cm,about 18.5 cm and 12 cm respectively,the shorter the better in the range above.