二倍体马铃薯抗旱相关指标筛选

高春燕; 秦军红; 段绍光; 徐建飞; 卞春松; 金黎平; 李广存

中国蔬菜 ›› 2022, Vol. 1 ›› Issue (1): 58-66.

二倍体马铃薯抗旱相关指标筛选

高春燕^☆，秦军红^☆，段绍光，徐建飞，卞春松，金黎平，李广存^*

农业农村部薯类作物生物学和遗传育种重点实验室，中国农业科学院蔬菜花卉研究所，北京 100081

收稿日期:2020-12-18 修回日期:2021-04-22 出版日期:2022-01-01 发布日期:2022-01-12
通讯作者: 李广存，男，研究员，专业方向：马铃薯分子育种，E-mail：liguangcun@caas.cn
作者简介:高春燕，女，硕士研究生，专业方向：蔬菜学，E-mail：1850322163@qq.com；秦军红，女，助理研究员，专业方向：马铃薯栽培生理，E-mail：qinjunhong@caas.cn
基金资助:
宁夏回族自治区农业育种专项（2019NYYZ01-1），国家马铃薯产业技术体系项目（CARS-9）

Screening of Drought Resistance Relate Indexes in Diploid Potato

GAO Chunyan ^☆，QIN Junhong ^☆，DUAN Shaoguang，XU Jianfei，BIAN Chunsong，JIN Liping，LI Guangcun^*

Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Key Laboratory of Biology and Genetic Improvement of Tuber and Root Crops，Ministry of Agriculture and Rural Affairs，Beijing 100081，China

Received:2020-12-18 Revised:2021-04-22 Online:2022-01-01 Published:2022-01-12

摘要/Abstract

摘要： 马铃薯是重要的粮菜饲料兼用作物，在我国主要分布在干旱和半干旱地区，干旱严重影响马铃薯的产量。因此，筛选抗旱资源、培育高产抗旱马铃薯品种至关重要。本试验首先对包含121 个基因型的二倍体马铃薯群体进行抗旱性评价，依据抗旱系数将所有基因型分为5 类。其中高抗旱材料16 份，高旱敏感材料14 份，进一步从各类别中分别选择1 个基因型进行不同水分处理，测定株高、光合作用和叶绿素荧光相关指标及产量等，并计算各指标与产量和抗旱系数的相关性。结果表明：不同水分条件下，随着马铃薯的生长发育和干旱胁迫的加重，各指标与产量及抗旱系数的相关性会发生变化。因此，在筛选高产抗旱材料时，某些指标的测定需要在特定时期进行；盆栽条件下，基质相对含水量为35%～45% 时，各基因型抗旱系数与大田的抗旱系数相关性最高，且在该水分处理下与抗旱系数显著相关的指标最多；现蕾期Height 和Chl、盛花期P_WUE 和Tr 与产量显著相关，可以用来初步判断各基因型产量的高低；盛花期基质相对含水量为75%～85% 时，P_WUE与抗旱系数显著正相关，可以用来区分所选基因型抗旱性的强弱。

关键词: 马铃薯, 抗旱, 生理指标, 材料筛选

Abstract: Potato is an important grain-vegetable-forage crop．In China it is mainly distributed in arid and semi-arid areas．Drought severely affects potato production．Therefore，it is of great importance to screen drought-resistant germplasm and foster varieties with drought resistance and high-yielding potential．This study firstly evaluated the drought resistance of diploid populations containing 121 genotypes，and divided them into 5 categories according to the drought resistance coefficient．Among them，16 were extremely drought-resistant and 14 were highly drought-sensitive．One genotype was further selected from each category for further studies，namely conducting different water treatments，measuring plant height，photosynthesis and chlorophyll fluorescence related indicators and yield，etc. and calculating each indicator’s correlation with yield and drought resistance coefficient．The results showed that under different water conditions，along with potato growth and development and aggravation of drought stress，the correlation of each indicator with yield and drought resistance coefficient was changed．Therefore，when screening high-yield droughtresistant materials，certain indicators need to be determined during a specific period．Under pot culture conditions，substrate relative water content was 35%-45%，the drought resistance coefficient of each genotype had the highest correlation with that in the fields．And there were maximum indicators having the significant relationship with the drought resistance coefficient under this water treatment．Plant height and Chl at budding stage and P_WUE and Tr at full blossom stage were significantly correlated with yield，which could be used preliminarily to determine the yield of each genotype．At full blossom stage，P_WUE and drought resistance coefficient was significantly positively correlated in the condition that substrate relative water content was 75%-85%，which could be used to distinguish the drought resistance of selected genotype．

Key words: potato, drought resistance, physiological indicators, material screening

高春燕，秦军红，段绍光，徐建飞，卞春松，金黎平，李广存. 二倍体马铃薯抗旱相关指标筛选[J]. 中国蔬菜, 2022, 1(1): 58-66.

GAO Chunyan，QIN Junhong，DUAN Shaoguang，XU Jianfei，BIAN Chunsong，JIN Liping，LI Guangcun. Screening of Drought Resistance Relate Indexes in Diploid Potato[J]. China Vegetables, 2022, 1(1): 58-66.

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二倍体马铃薯抗旱相关指标筛选

Screening of Drought Resistance Relate Indexes in Diploid Potato

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