Genetic variation among diverse safflower genotypes for some agro-morphological traits

被引:0
|
作者
Sabaghnia, Naser [1 ]
Ebrahimi, Hossein [1 ]
Janmohammdi, Mohsen [1 ]
机构
[1] Univ Maragheh, Dept Plant Prod & Genet, Maragheh, Iran
关键词
germplasm; principal components analysis; seed yield; yield components; germoplasme; analyse des composantes principales; rendement en graines; composantes du rendement; CARTHAMUS-TINCTORIUS L; YIELD; SELECTION;
D O I
10.1051/ocl/2024015
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
This study sought to investigate the genetic diversity among 100 safflower genotypes concerning seed yield performance and seventeen morphological traits and yield components. Employing an alpha 10 x 10 lattice design, the two trials were performed in 2022 and 2023, with two replicates. Principal component analyses (PCA) explained 65% and 61% of the variability in the first and second years respectively. In the first year, the yield of a single plant was positively correlated with plant height, lateral capitulum total weight and seed number and weight, and main capitulum seed number and weight. In the second year, the results obtained generally corroborated the first year. In both years, the PC1 and PC2 axes divided genotypes into four main groups which contained 14, 11, 15, and 10 entries respectively. Comparison of the traits of the four clusters demonstrated that Cluster-II and Cluster-IV exhibited the highest single plant yields., These clusters can therefore be considered as potential heterotic groups in crossbreeding programs aimed at producing genotypes with superior performance. About 21 genotypes of 100 studied were identified as good candidates for use in safflower breeding programs. Cette & eacute;tude visait & agrave; examiner la diversit & eacute; g & eacute;n & eacute;tique de 100 g & eacute;notypes de carthame concernant le rendement en graines et 17 caract & egrave;res morphologiques et composantes du rendement. Utilisant un dispositif exp & eacute;rimental de type alpha-lattice 10 x 10, deux essais ont & eacute;t & eacute; r & eacute;alis & eacute;s en 2022 et 2023, avec deux r & eacute;p & eacute;titions. Les analyses en composantes principales (ACP) ont permis d'expliquer 65 % et 61 % de la variabilit & eacute; au cours de la premi & egrave;re et de la deuxi & egrave;me ann & eacute;e respectivement. La premi & egrave;re ann & eacute;e, le rendement d'une plante & eacute;tait positivement corr & eacute;l & eacute; & agrave; la hauteur de la plante, au poids total et au nombre et au poids des graines des capitules lat & eacute;raux, ainsi qu'au nombre et au poids des graines du capitule principal. La deuxi & egrave;me ann & eacute;e, les r & eacute;sultats obtenus ont g & eacute;n & eacute;ralement corrobor & eacute; ceux de la premi & egrave;re ann & eacute;e. Au cours des deux ann & eacute;es, les axes PC1 et PC2 ont divis & eacute; les g & eacute;notypes en quatre groupes principaux qui contenaient respectivement 14, 11, 15 et 10 entr & eacute;es. La comparaison des caract & eacute;ristiques des quatre groupes a montr & eacute; que les groupes II et IV pr & eacute;sentaient les rendements les plus & eacute;lev & eacute;s. Ces groupes peuvent donc & ecirc;tre consid & eacute;r & eacute;s comme des groupes h & eacute;t & eacute;rotiques potentiels dans les programmes de croisement visant & agrave; produire des g & eacute;notypes aux performances sup & eacute;rieures. Environ 21 g & eacute;notypes sur les 100 & eacute;tudi & eacute;s ont & eacute;t & eacute; identifi & eacute;s comme de bons candidats & agrave; utiliser dans les programmes de s & eacute;lection du carthame.
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页数:9
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