干旱区生态环境知识资源中心(Arid): An efficient greenhouse method to screen potato genotypes for drought tolerance

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DOI	10.1016/j.scienta.2019.04.017
	An efficient greenhouse method to screen potato genotypes for drought tolerance
	Qin, Junhong; Bian, Chunsong; Liu, Jiangang; Zhang, Jiaojiao; Jin, Liping
通讯作者	Jin, Liping
来源期刊	SCIENTIA HORTICULTURAE
ISSN	0304-4238
EISSN	1879-1018
出版年	2019
卷号	253 页码:61-69
英文摘要	Potato (Solarium tuberosum L.) is the third food crop in the world. China is the biggest potato producer worldwide where 60% of the potato crop is cultivated in arid and semi-arid climates, Only a few varieties with high drought tolerance were released in China. It is important to accelerate the selection of drought resistant cultivars in a fast, simple and efficient method. Ten advanced clones, which were selected based on the results from two-years drought evaluation trials, along with two widely-adopted cultivars in China with contrast-drought resistance were evaluated under well-watered condition and water restriction condition. Plant traits related to gas exchange, chlorophyll, specific leaf area (SLA) and leaf dry matter content (LDM) were collected at 0, 20, 40 and 60 days after water restriction. Moreover, tuber number and tuber yield were measured at harvest. Tuber number and weight were reduced by drought. The drought index (DI) of the pot trial had a strong correlation with that of the field trial. Net photosynthesis and stomatal conductance were related to yield in the early stages. SLA and LDM had significantly positive and negative correlations respectively with DI after water restriction. Genotype C93 had the highest DI and yield stability followed by C112, C46 and C82 in the pot trial. All had better performance than the best local variety Tacna. Our findings suggested that the four clones above can be good candidates for drought tolerance breeding. SLA and LDM could be the low-cost and efficiency indicators for potato drought resistance selection after tuber initiation.
英文关键词	Potato Specific leaf area Water restriction Drought index
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000471085900008
WOS关键词	WATER-USE EFFICIENCY ; CARBON-ISOTOPE DISCRIMINATION ; LEAF-AREA ; GROWTH ; DEFICIT ; PEANUT ; MASS ; CONSEQUENCES ; ASSOCIATION ; CONDUCTANCE
WOS类目	Horticulture
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218735
作者单位	Chinese Acad Agr Sci, Inst Vegetables & Flowers, Minist Agr & Rural Affairs, Key Lab Biol & Genet Improvement Tuber & Root Cro, Zhongguancun South St 12, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Qin, Junhong,Bian, Chunsong,Liu, Jiangang,et al. An efficient greenhouse method to screen potato genotypes for drought tolerance[J],2019,253:61-69.
APA	Qin, Junhong,Bian, Chunsong,Liu, Jiangang,Zhang, Jiaojiao,&Jin, Liping.(2019).An efficient greenhouse method to screen potato genotypes for drought tolerance.SCIENTIA HORTICULTURAE,253,61-69.
MLA	Qin, Junhong,et al."An efficient greenhouse method to screen potato genotypes for drought tolerance".SCIENTIA HORTICULTURAE 253(2019):61-69.