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

作　　者：陈小央 柴亚倩 董文其[2] 许云飞 邱文敬 孙玉燕[2] CHEN Xiaoyang;CHAI Yaqian;DONG Wenqi;XU Yunfei;QIU Wenjing;SUN Yuyan(Zhejiang Seed Management Station,Hangzhou 310020,Zhejiang;Institute of Vegetables,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,Zhejiang)

机构地区：[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

出　　处：《浙江农业科学》2024年第5期1019-1024,共6页Journal of Zhejiang Agricultural Sciences

基　　金：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。

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(R^(2)=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。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(R^(2)=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 

分 类 号：S642.4[农业科学—蔬菜学]