丝瓜种质资源耐低温弱光性鉴定评价及筛选
Identification,evaluation and screening for low temperature and low light tolerance in germplasm resources of sponge gourd
陈小央 1柴亚倩 2董文其 2许云飞 2邱文敬 2孙玉燕2
作者信息
- 1. 浙江省种子管理总站,浙江 杭州 310020
- 2. 浙江省农业科学院 蔬菜研究所,浙江 杭州 310021
- 折叠
摘要
随着设施农业的不断发展,亟需选育出符合设施栽培的耐低温弱光丝瓜新品种,种质资源的耐低温弱光鉴定评价可为新品种选育奠定重要的材料基础.基于此,该研究利用智能人工气候室模拟低温弱光环境,对 192 份丝瓜种质资源开展耐低温弱光性鉴定,通过冷害分级、冷害指数、相对电导率等指标开展鉴定评价.结果表明,192 份丝瓜种质资源的冷害指数范围为 35.00%～92.86%,平均冷害指数为 61.98%,变异系数为19.50%;相对电导率范围为 10.39%～82.00%,平均相对电导率为 49.18%,变异系数为 24.80%.结合冷害指数(≤45%)和相对电导率(≤30%),筛选出耐低温弱光的丝瓜种质资源 11 份.将 192 份种质资源的冷害指数(y)与相对电导率(x)进行相关性分析,二者呈极显著正相关,并获得线性方程 y= 0.892x+0.1811(R2= 0.8101).研究结果可为丝瓜种质资源耐低温弱光鉴定评价及耐低温弱光新品种选育奠定重要的理论和材料基础.
Abstract
With the continuous development of facility agriculture,there is an urgent need to select and breed new sponge gourd varieties with low temperature and low light tolerance.Identification and evaluation of low temperature and low light tolerance of germplasm resources can lay an important material foundation for new variety selection and breeding.In this study,192 sponge gourd germplasm resources were evaluated for low temperature and low light tolerance in an intelligent artificial climate chamber with simulating low temperature and low light environment.The cold damage classification,cold injury index and relative conductivity for each germplasm resource were identified and evaluated.The results showed that the cold injury index of 192 sponge gourd germplasm resources ranged from 35.00%to 92.86%,with an average of 61.98%and a coefficient of variation of 19.50%;the relative conductivity ranged from 10.39%to 82.00%,with an average of 49.18%and a coefficient of variation of 24.80%.Combining with the cold injury index(≤45%)and relative conductivity(≤30%),11 sponge gourd germplasm resources with low temperature and low light tolerance were screened.Correlation analysis of cold injury index(y)and relative conductivity(x)of 192 sponge gourd germplasm resources were carried out,and the two parameters were highly significantly and positively correlated.Additionally,the linear equation y=0.892x+0.1811(R2 =0.8101)was obtained.The results of the study provided important theoretical guidance and material basis for low temperature and low light tolerance identification,evaluation,selection and new varieties breeding in sponge gourd.
关键词
丝瓜/种质资源/低温弱光/冷害指数/相对电导率Key words
sponge gourd/germplasm resources/low-temperature and low-light/cold injury index/relative electric conductivity引用本文复制引用
基金项目
浙江省农业(蔬菜)新品种选育重大科技专项(2021C02065)
浙江省瓜菜种质资源精准鉴定()
出版年
2024
NETL
NSTL
维普
万方数据