论文部分内容阅读
通过对青稞冠层性状及穗部经济性状遗传参数分析,结果表明:除千粒重、株高外,其余各性状具有较丰富的遗传变异度;千粒重、株高、穗下节粗、穗粒数遗传力较高,单株穗数、旗叶面积遗传力相对较低;穗下节粗、穗粒数、倒二叶面积、穗长、单株穗数遗传进度较大,其余性状遗传进度较小;遗传相关与表型相关方向完全一致,旗叶面积与穗长、穗粒数呈负相关,与穗粒重、千粒重呈显著或极显著负相关,倒二、倒三叶面积与穗长、穗粒数、穗粒重呈正相关,而倒二叶面积与千粒重呈极显著负相关、倒三叶面积与千粒重呈负相关;株高与穗长、穗粒数、穗粒重、千粒重、单株穗数均呈负相关;穗下节粗与穗长、穗粒数、穗粒重、单株穗数呈正相关,与千粒重呈显著负相关。
The results showed that except for 1000-grain weight and plant height, all the other traits had rich genetic variability; the average grain weight, plant height, panicle size and grain number per spike The spike number per panicle and the heritability of flag leaf area were relatively low. The genetic progress of panicles, grains per panicle, panicle area, spike length and spike number per spike were larger and the genetic progress of other traits was smaller ; The genetic correlation was completely consistent with that of the phenotype. There was a negative correlation between the flag leaf area and the ear length and grain number per spike, significant or very significant negative correlation with the grain weight and 1000-grain weight. The area of the second and third leaves and the spike length, The number of grains per spike and the weight of grains per spike were positively correlated, while the area of second leaves was extremely significantly negatively correlated with 1000-grain weight. The area of inverted-third leaves was negatively correlated with 1000-grain weight. The height and spike length, The number of panicles was negatively correlated. The panicle diameter was positively correlated with panicle length, spikelets per panicle, panicle weight, panicles per panicle, and negatively correlated with 1000-grain weight.