Abstract:
Garden pea (Pisum sativum L.) is one of the most vegetable legume crops grown in Egypt
through the winter season. In order to develop high-yieldinggenotypes in this legume crop
available genetic wealth is very essential. Therefore, genetic variability induced by mutagenic
agents in plant growth traits and their contribution towards seed yield may be used as a criterion
for yield improvement in garden peas. The overall objective of this study was to estimate the
extent of association between plant growth traits with the doses of mutagenic agents through
correlation and regression analysis. One germplasm of garden pea, as well as seven doses of
mutagenic agents in addition to the control, were used in this study. The experiment was carried
out in a randomized complete block design with three replications in the Agri-Farm of Genetic
Department inside the campus of Mansoura University. Analysis of the correlation coefficient
revealed that the amount of correlation coefficients appeared very close between plant fresh
weight, chlorophyll b with the mutagenic doses. Meanwhile, plant dry weight, leaf area
developed per plant andtotal chlorophyll concentration exhibited a positive correlation with
mutagenic doses that induced new genotypes in garden peas. Therefore, these traits may be
considered the most reliable traits that respond to mutagenic agents which can be used as
indicators for new genotypes induced which related to effective improvement in the growth and
yield of garden peas through mutation breeding. |
