Identification of seed heat tolerance and its correlation with agronomic traits in Brassica napus L.

Identification of seed heat tolerance and its correlation with agronomic traits in Brassica napus

L.

Guizhen

Gao;Kun

Xu;Biyun

Chen;Xi

Cheng;Guixin

Yan;Jiangwei

Qiao;Qian

Huang;Xiaoming Wu

【期刊名称】《中国油料作物学报（英文）》 【年(卷),期】2018(003)001

【摘要】To better understand the effect of high temperature on seed viability,artificial aging treatments were implemented on 472 accessions of rapeseed (Brassica napus L.) by constant high temperature at 70°C for 8h.Results showed a remarkable impact of constant heat on seed germination.After heat treatment,considerable variation was found in seed germinability,some genotypes even lost the ability to germinate.The

effect

of

accelerated

aging

was

highly

significant.Germination parameters varied among ecotypes.Seed viability varied with different origin,and was significantly and positively correlated with seed yield per plant and dry weight of aboveground parts per plant among 14 agronomic traits.Germination traits were positively correlated with oil contents. 【总页数】12页(21-32) 【关键词】

【作者】Guizhen Gao;Kun Xu;Biyun Chen;Xi Cheng;Guixin Yan;Jiangwei