高粱籽粒单宁积累规律

Accumulation Patterns of Tannin in Sorghum Grain

为指导专用型高粱生产及育种,对近几年黑龙江省不同积温带主栽的3个杂交种及亲本的单宁积累规律进行研究。结果表明:不同品种开花后各阶段的单宁积累规律各有差异,参试品种开花后的前期积累均为下降趋势,中期及后期不同品种积累有所差异。龙杂5号和龙杂9号表现为先下降,再上升,龙杂10号则表现为先上升,再缓慢下降。高粱成熟期的单宁含量较低,成熟后,龙杂5号、龙杂9号以及亲本间单宁含量均有增加,龙杂10号和父本单宁含量增加,母本单宁含量减少。杂交种与亲本间的单宁积累过程相关性极大,当双亲的单宁含量相差较小时,杂交种的单宁积累基本介于双亲之间,当双亲的单宁含量差异较大时,杂交种的单宁含量与高亲值相近。

In order to guide production and breeding of special type sorghum,tannin accumulation regularity of3main hybrid varieties and their parents planted in different accumulated temperature zone of Heilongjiang prov-ince in recent years was studied.The results showed that accumulation patterns of tannin were different in vari-ous varieties during different stages.Accumulation patterns of all the varieties were declining during early stage after flowering.Meanwhile,patterns of some varieties were different during middle and late stage with Longza5and Longza9first down then rise,Longza10first rise then slowly down.Tannin content was lower at mature period.After mature period,Longza5,Longza9and their parents were increased,the content of the Longza10and the father was increased,and the maternal content decreased.Correlation of tannin accumulation patterns between hybrid and their parents was significant.Tannin content accumulation of hybrid was between their par-ents when smaller difference of tannin content between parents,but that of hybrid was similar to the parent with higher tannin content when larger difference between parents.