干旱区生态环境知识资源中心(Arid): Urochloa mosambicensis in the Brazilian semi-arid region: morpho-agronomic characterization of accessions under restricted climatic conditions

Arid

DOI	10.1007/s10722-023-01797-0
	Urochloa mosambicensis in the Brazilian semi-arid region: morpho-agronomic characterization of accessions under restricted climatic conditions
	Martins, Carla Tatiana Vasconcelos Dias; do Nascimento, Tiago Lima; Bueno, Luice Gomes; Antonio, Rafaela Priscila; Borges, Rita Mercia Estigarribia; de Melo, Natoniel Franklin
通讯作者	de Melo, NF
来源期刊	GENETIC RESOURCES AND CROP EVOLUTION
ISSN	0925-9864
EISSN	1573-5109
出版年	2024
卷号	71 期号:6 页码:2673-2686
英文摘要	The objective of this study was to morpho-agronomically characterize Urochloa sp. accessions from the forage collection of Embrapa Caprinos e Ovinos, aiming to identify the most divergent accessions to support the selection of materials better adapted to cultivation under semi-arid conditions. Fifteen Urochloa sp. accessions were used in a randomized block design with three replications and eight plants per plot, with a spacing of 0.5 m between plants and 0.5 m between rows. A uniformization cut (60 days after transplantation) was performed, followed by two subsequent cuts at intervals of 60 days, starting from the uniformization cut. The morphological characterization was initiated 12 days after the uniformization cut. The characterization of the accessions was performed based on 24 quantitative and qualitative morpho-agronomic descriptors of Brachiaria. The evaluations of fresh and dry matter productivity were performed following the two subsequent cuts after the uniformization cut. After completing these evaluations, a water deficit tolerance assessment was also conducted. The quantitative descriptors were subjected to analysis of variance, considering the two cuts. The obtained data were analyzed, and ten groups were formed, with the accessions UmCO-11 (2) and UmCO-2 (2) showing the highest genetic divergence. In conclusion, high variability was observed among the evaluated Urochloa accessions, which may indicate their potential for incorporation into breeding programs. The identification of genotypes tolerant to water deficit stress is of great value for ensuring productivity and the perenniality of pasture.
英文关键词	Forage grasses Dry matter productivity Genetic divergence Plant genetic resources
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001106403300001
WOS关键词	GRASSES ; GROWTH
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403915
推荐引用方式 GB/T 7714	Martins, Carla Tatiana Vasconcelos Dias,do Nascimento, Tiago Lima,Bueno, Luice Gomes,et al. Urochloa mosambicensis in the Brazilian semi-arid region: morpho-agronomic characterization of accessions under restricted climatic conditions[J],2024,71(6):2673-2686.
APA	Martins, Carla Tatiana Vasconcelos Dias,do Nascimento, Tiago Lima,Bueno, Luice Gomes,Antonio, Rafaela Priscila,Borges, Rita Mercia Estigarribia,&de Melo, Natoniel Franklin.(2024).Urochloa mosambicensis in the Brazilian semi-arid region: morpho-agronomic characterization of accessions under restricted climatic conditions.GENETIC RESOURCES AND CROP EVOLUTION,71(6),2673-2686.
MLA	Martins, Carla Tatiana Vasconcelos Dias,et al."Urochloa mosambicensis in the Brazilian semi-arid region: morpho-agronomic characterization of accessions under restricted climatic conditions".GENETIC RESOURCES AND CROP EVOLUTION 71.6(2024):2673-2686.