热带作物学报2024，Vol.45Issue(8)：1633-1640,8.DOI:10.3969/j.issn.1000-2561.2024.08.012
不同木豆幼苗低温胁迫下的生理响应及耐寒性鉴定
Physiological Response to Cold Stress and Identification of Its Cold Tolerance in Different Pigeonpea Seedling Stage
摘要
Abstract
Pigeonpea is an important food and forage crop in the tropics.In order to dissect the physiological character-istics of pigeonpea under cold stress and its cold tolerance,eight seedlings of pigeonpea were tested and analyzed by 8 physiological indexes under 4 ℃ stress,and cold tolerance of pigeonpea were evaluated by subordinate function value method in this study.The results showed that with the prolongation explored to cold stress,REC,SS,MDA and Pro increased respectively,SOD and POD increased firstly and then decreased,and Chl showed a general trend of decline,and the variation of CAT activity was significant difference only in P2 among the 8 accessions.The cold tolerance of the 8 accessions was in the order:Miandian＞Danzhou＞170306001＞060302216＞ICPL7086＞Nan 02137＞Guangxi＞Qiong-zhong.The content of Chl,SOD and POD activity were significantly correlated with cold tolerance of pigeonpea,which could be the reliable physiological indexes to evaluate the cold tolerance of pigeonpea.关键词
木豆/低温胁迫/生理指标/耐寒性Key words
Cajanus cajan/cold stress/physiological indexes/cold tolerance分类
农业科技引用本文复制引用
唐军,王文强,丁西朋,马向丽,毕玉芬,郭凤根..不同木豆幼苗低温胁迫下的生理响应及耐寒性鉴定[J].热带作物学报,2024,45(8):1633-1640,8.基金项目
海南农业厅科技示范推广项目"牛羊饲草利用示范项目" （）
热带饲料作物与特色畜牧创新团队项目(No.17CXTD-18) （No.17CXTD-18）
非营利性科研机构改革专项启动费项目(No.0316051). （No.0316051）
