干旱区生态环境知识资源中心(Arid): Guar resilience in water-restricted production

Arid

DOI	10.1002/csc2.20796
	Guar resilience in water-restricted production
	Pabuayon, Irish Lorraine Bicaldo; Singh, Sukhbir; Ritchie, Glen
通讯作者	Pabuayon, ILB
来源期刊	CROP SCIENCE
ISSN	0011-183X
EISSN	1435-0653
出版年	2022
卷号	62 期号:5 页码:1937-1947
英文摘要	Guar [Cyamopsis tetragonoloba (L.) Taub] is an alternative crop in the Southern High Plains that thrives in semi-arid regions, due to its low water input requirements. Field experiments were conducted in 2017 and 2018 at New Deal, TX, to evaluate the response of guar (`Matador') to four levels of deficit irrigation (DI; extreme, 51 mm; severe, 127 mm; moderate, 203 mm; and mild, 279 mm). Soilmoisture extraction patterns, plant height, leaf area index, yield components, seed yield, harvest index (HI), agronomic water use efficiency (AWUE), and irrigation WUE (IWUE) were measured among the irrigation levels. In both years, guar grown under extreme and severe DI extracted a major portion of the water from the 50-to-100-cm soil depth. Water deficit reduced plant height, leaf area index, and number of pods per plant in both years. However, the IWUE and 1,000-seed weight increased with reduced irrigation. There were no significant differences in seed yield, HI, and AWUE among treatments as a result of a tradeoff between increased seed weight with low pod production under lower DI treatments and increased pod production with low seed weight under higher DI treatments. Guar extracted water deeper in the soil and produced adequate numbers of pods per plant in balance with the source organ capacity to allocate resources toward optimal seed development. Our research offers valuable information about root exploration and development of larger seeds as compensatory mechanisms that can be further explored to improve the adaptability of guar under water-restricted production conditions.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000828705100001
WOS关键词	DEFICIT IRRIGATION ; BIOMASS ALLOCATION ; GRAIN-SORGHUM ; STRESS ; YIELD ; WHEAT ; GROWTH ; PLANTS ; EXTRACTION ; NODULATION
WOS类目	Agronomy
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/2XILL650/392199
推荐引用方式 GB/T 7714	Pabuayon, Irish Lorraine Bicaldo,Singh, Sukhbir,Ritchie, Glen. Guar resilience in water-restricted production[J],2022,62(5):1937-1947.
APA	Pabuayon, Irish Lorraine Bicaldo,Singh, Sukhbir,&Ritchie, Glen.(2022).Guar resilience in water-restricted production.CROP SCIENCE,62(5),1937-1947.
MLA	Pabuayon, Irish Lorraine Bicaldo,et al."Guar resilience in water-restricted production".CROP SCIENCE 62.5(2022):1937-1947.