Examining Genetic Diversity in Spinach (Spinacia oleracea L.) through the Analysis of Select Morphological Traits.
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Abstract
Spinach, a leafy green vegetable cherished for its nutritional and medicinal benefits, is globally cultivated. This study assessed the genetic diversity of fifty-one Spinacia oleracea L. germplasms from diverse regions in Bangladesh, utilizing both qualitative and quantitative traits. Variation was observed across all traits, except for Inflorescence color and seed type. Leaf shapes included elliptic, broad elliptic, ovate, and broad ovate, with elliptic being predominant. Maximum variation was noted in edible leaf weight per plant, followed by petiole length and the number of lateral branches. Specific germplasms exhibited longer and broader leaves, with RC-139 having the highest number of lateral branches. Bolting time, with NQ-68 requiring the most days, proved to be a crucial trait for spinach. The dendrogram grouped thirty-six germplasms into Cluster I, while Cluster IV contained a solitary germplasm. Cluster II showed the highest mean values for leaf length, leaf width, and edible leaf weight per plant. Principal Component Analysis revealed that leaf length, leaf width, and petiole length were pivotal contributors to germplasm diversity. Selecting for leaf traits and bolting time, germplasms TRMR-136, TRMR-144, R-342, RNF-26, NQ-68, and RC-139 are recommended for future breeding programs based on their distinctive characteristics.
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References
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