Paper Details

PJB-2025-236

Untangling genetic variability of twenty-one field pea (Pisum sativum L. subsp. Arvense L.) genotypes for grain yield in Bilecik, Türkiye

 

Serap Kizil Aydemir, Nilay Kayin, Mashael Daghash Alqahtani and Muhammad Aamir Iqbal
Abstract

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Grain legumes, including field pea, contribute significantly to ensuring nutritional security; however, research gaps exist regarding their genetic potential for grain yield under the agro-ecological conditions of Bilecik, Türkiye. Therefore, a two-year screening study comparatively assessed 15 potent genotypes of field pea (KB-211, 21, 39, 55, 70, 79, 90, 95, 104, 110, 124, 141, 153, 161, and 165) and 6 varieties (Tore, Servet, Whistler, Ulubatli, Golyazi, and Kirazli). The experiment was conducted in a randomized complete block design (RCBD) with three replicates. The results showed that genotype 39 had the highest harvest index (37.7%), and the Whitler variety exhibited the maximum number of pods per plant (13.9), biological yield (8.92 t ha^-1), and straw yield (7.04 t ha^-1). However, the Golyazi cultivar showed a maximum seed yield of 2.71 t ha^-1 (89% higher than the least performing genotype 21) owing to superior genetic potential and adaptability to soil and environmental conditions. In addition, the correlation analysis demonstrated a positive and significant association between seed yield and physiological maturity (0.537*), biological yield (0.760**), and straw yield (0.607**). Contrastingly, a negative correlation (-0.667**) between seed yield and the number of seeds per pod was recorded, probably owing to a reduction in seed weight with increasing number of seeds per plant. Moreover, the biological yield had the strongest direct association with seed yield, which in turn had linear relationships with straw yield and the number of seeds per pod. Furthermore, as per principal component analysis, PC 1 depicted the eigenvalue of 3.79 and accounted for 47.45% of the variation, while PC 2 had an eigenvalue of 2.13 and accounted for 26.70% of the variation. Based on recorded findings, Golyazi, Whitler, and genotype 39 could be recommended to field pea growers and breeders for developing high-potential cultivars with better adaptability under changing climatic scenarios of global warming and disruption of rainfall patterns.

 

To Cite this article: Aydemir, S.K., N. Kayin, M.D. Alqahtani and M.A. Iqbal. 2026. Untangling genetic variability of twenty-one field pea (Pisum sativum L. subsp. Arvense L.) genotypes for grain yield in Bilecik, Türkiye. Pak. J. Bot., 58(6): DOI: http://dx.doi.org/10.30848/PJB2026-6(3)  
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