干旱区生态环境知识资源中心(Arid): Phenotypic diversity of USDA guayule germplasm collection grown under different irrigation conditions

Arid

DOI	10.1016/j.indcrop.2019.111867
	Phenotypic diversity of USDA guayule germplasm collection grown under different irrigation conditions
	Luo, Zinan; Abdel-Haleem, Hussein
通讯作者	Abdel-Haleem, Hussein
来源期刊	INDUSTRIAL CROPS AND PRODUCTS
ISSN	0926-6690
EISSN	1872-633X
出版年	2019
卷号	142
英文摘要	Parthenium argentatum (guayule), originated from northern Mexico and southern Texas deserts, is a good candidate for arid and semi-arid sustainable agricultural systems to produce domestic natural rubber and other industrial byproducts. Exploring the genetic and phenotypic diversities of guayule germplasm collections is required for continuous genetic improvement of guayule characteristics to meet the growing demand of guayule for rubber, resin and latex industries. The current study phenotypically evaluated a larger guayule USDA germplasm collection than before, with 56 accessions for 10 important morphological and agronomic traits evaluated, which include plant biomass, rubber and resin content, rubber and resin yield. The accessions were grown under two different irrigation conditions: well-watered and water-stressed environments. Significant genotypic effects were found for all studied traits indicating the wide genetic variability of this collection. Significant Environmental effects were found in rubber content, resin content, rubber yield and dry weight biomass. No significant genotype-by-environment interactions (GEI) were observed indicating the similarity of those accessions across growing conditions. Moderate to high entry-mean heritability values were estimated for these traits, suggesting that selection is feasible to enhance the genetic gain. Significant inter-trait correlations were found between biomass-related traits and resin/rubber yield, as well as ploidy levels and resin/rubber content, indicating the possibility of improving multiple traits at one time. To conclude, this study explored the phenotypic variations of the USDA guayule germplasm under different irrigation conditions, which will provide recommendations for parent and off-spring selections to enhance the breeding values in guayule breeding programs.
英文关键词	Abiotic stress Drought Guayule Irrigation Plant biomass Resin Rubber Heritability BLUPs USDA guayule collection Phenotypic diversity Ploidy level
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000499762200028
WOS关键词	RUBBER PRODUCTION ; WATER STATUS ; HERITABILITY ; RESIN ; LATEX ; QUANTIFICATION ; METABOLISM ; BIOMASS
WOS类目	Agricultural Engineering ; Agronomy
WOS研究方向	Agriculture
EI主题词	2019-12-15
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311744
作者单位	USDA ARS, US Arid Land Agr Res Ctr, Maricopa, AZ 85138 USA
推荐引用方式 GB/T 7714	Luo, Zinan,Abdel-Haleem, Hussein. Phenotypic diversity of USDA guayule germplasm collection grown under different irrigation conditions[J],2019,142.
APA	Luo, Zinan,&Abdel-Haleem, Hussein.(2019).Phenotypic diversity of USDA guayule germplasm collection grown under different irrigation conditions.INDUSTRIAL CROPS AND PRODUCTS,142.
MLA	Luo, Zinan,et al."Phenotypic diversity of USDA guayule germplasm collection grown under different irrigation conditions".INDUSTRIAL CROPS AND PRODUCTS 142(2019).