Safaa Ali^(1)*

(1). Basic Sciences, Faculty of Agriculture, University of Tishreen, Syria

(*Corresponding author: Safaa Ali, E-mail :  sa8691317@gmail.com)

Received: 8/03/2023           Accepted: 10/04/2023

Abstract: 

The research was carried out in Damsarkho district of Lattakia Governorate during the two agricultural seasons 2021 and 2022, according to the randomized complete block design (RCBD) and with three replications, for five genotypes of wheat (Triticum aestivum L.) (Sham4, Sham6, Sham8, Sham10, Research6), which we obtained from the Seed Multiplication Corporation and some agricultural pharmacies in Lattakia (these types are characterized by their suitability to the local environmental conditions, their resistance to agricultural pests and the variation in their quantitative and qualitative productivity), to study some genetic indicators of the most important morphological and productive traits (number of total shoots, plant height, spike length, head length, number of Fertile spikelets, the number of total spikelets, the number of grains in a spike, the weight of grains in a spike, the weight of 1000 grains, and the grain yield per plant). With the aim of selecting the best ones and benefiting from them in the programs of breeding this crop and improving it to develop models of soft wheat for the desired characteristics and adapted to the local environment. The studied genotypes of soft wheat differed significantly in all studied traits, and the results showed the presence of genetic variations and differences in the degrees of heritability and genetic progression, in addition to differences in the values of the genetic, phenotypic and environmental correlation coefficients for all studied traits in soft wheat. The studies also demonstrated the possibility of establishing different selective indices for the important traits studied through the positive genetic correlations between the studied traits. The current study indicated that the priority given to traits such as the number of grains per spike, weight of 1000 grains, length of the spike, the number of total spikelets per spike, and plant height during the selection process to improve the crop due to its high heritability rates associated with good genetic progress.

Keywords: wheat, degree of heritability, genetic progression, correlation coefficient.

Full paper in Arabic: pdf