摘要
本研究以６个向日葵品种为材料，进行籽粒产量相关性状的通径分析。结果表明，７个性状对籽粒产量的影响顺序为：饱粒数＞葵盘直径＞百粒重＞出苗至成熟天数＞葵盘倾斜程度＞空秕率＞株高。在空秕率保持相对稳定，增加株高、葵盘直径、出苗至成熟天数、葵盘倾斜程度，可通过增加饱粒数或百粒重，间接地提高籽粒产量。对籽粒产量的决定程度，以葵盘直径与饱粒数的互作效应最大，其它性状保持不变，增大葵盘直径或饱粒数是提高籽粒产量的有效途径。
Based on the experimental materials from the six sunflower species,the path analysis of grain yield correlation characters was implemented in this study.The results indicated that the order in the impact of seven characters on grain yield is:plump grain number>sunflowerplate diameter>One-hundred-grain weight>days from emerging to ripenig>sunflower-plate inc lination>empty-grain percentage>plant beight.If empty-grain percentage maintains constant relatively and sunflower grain output can go up indirectly and effectiyely through increase of plant height, sunflower-plate diameter,hays from emerging to ripening,plump grain number or one-hundred-grain weight.The interaction between sunflower-plate diameter and plump grain number has the greatest effect;on grain output,and the increase of sunflower-plate diameter or plump grain number in the effective way to raise grain yield under the condition of keeping the other characters steady.
出处
《宁夏农林科技》
1994年第2期18-21,共4页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
向日葵
农艺性状
产量
通径分析
Sunflower
Agronomic characters
Increase of grain output
