Agro-morphological diversity within field pea (Pisum sativum L.) genotypes

Abstract

The objective of this study was to analyze the genetic diversity present in twelve Algerian pea genotypes using 24 agro-morphological traits. The experiment was carried out during three growing seasons (2013 to 2014, 2014 to 2015 and 2015 to 2016). ANOVA analysis revealed the presence of a great genetic variability for all characters studied. This diversity might be used in breeding programs. Also, expression of characteristics is highly influenced by the environment. For quantitative traits, correlation studies showed that weight of 100 seeds was significantly and positively correlated with leaflet length. Number of pods per 1 m² has a positive significant correlation with leaflet width. Weight of pods per 1 m² was correlated with three characters: Stipule length, leaflet length and leaflet width. The principal component analysis revealed that three components explained 85.92% of variation. Two groups were noted by dendrogram. The first group (demchi 1, p069, bouch1, p539, p593, p595 and p596) was characterized by a high pod yield; the other group comprises the less productive genotypes (p071, sefrou, p072, p073 and p350). Otherwise, the genotype p593 produced the best results for pods yield.

Genome-Wide Association Mapping for Agronomic and Seed Quality Traits of Field Pea (Pisum sativum L.)

“…Pea growth habit can be indeterminate or determinate, and cotyledon color can be yellow, green or red. Pea accessions also differ substantially in yield potential, ease of harvest, vine length, maturity, seed shape, seed size, and disease resistance (Ouafi et al, 2016; Rana et al, 2017). Thus, knowledge of the genetic diversity of pea accessions is of importance to select genetically diverse parents and to broaden the genetic basis of the cultivated peas.…”

Genome-Wide Association Mapping for Heat Stress Responsive Traits in Field Pea

“…Genetic improvement of pea for heat and drought resistance is a promising approach to stabilize yield under environmental stresses. Pea germplasm has a wide range of diversity in morpho-anatomical, biochemical and physiological characteristics [8,9]. Among other things, such diversity has been explored to identify traits associated with heat response [10][11][12].…”

Seed Diversity of Indigenous Field Peas (Pisum sativum L.) Germplasm Collection in Oman

“…The correlation analysis of seed characters showed their significant (p < 0.05) and positive associations between each other. Selection of strongly associated characters like seed length and 100-seed weight can be used to improve seed quality characters that influence yield and their value in marketing as suggested by earlier workers who studied both seed and yield traits in peas for selection of parents in crossing program (Singh & Srivastava, 2015;Ouafi et al, 2016;Bhuvaneswari et al, 2017;Iqbal et al, 2017).…”

“…Knowledge of genetic diversity available in the indigenous germplasm is very useful for promoting the efficient use of genetic variations in breeding programs through proper selection of cross combination of parents. There are several studies undertaken on genetic diversity of pea populations not only in the past (Hoey et al, 1996;Simioniuc et al, 2002;Taran et al, 2005;Esposito et al, 2007;Zahir et al, 2007;Yadav et al, 2009) but also recently (Kumari et al, 2013;Kole et al, 2015;Ouafi et al, 2016;Khan et al, 2016;Bhuvaneswari et al, 2017) using both morphological and yield characters, and molecular markers.…”