Phân tích các thông số di truyền ở bốn quần thể đậu xanh Taichung đột biến thế hệ M3=Genetic parameter analysis in F3 generation of four mutation induced Taichung mungbean populations

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Tác giả: Thị Thanh Thủy Trần, Trọng Ngôn Trương

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học (Đại học Cần Thơ), 2024

Mô tả vật lý: tr.127-132

Bộ sưu tập: Metadata

ID: 187698

Thêm vào giỏ

Giống đậu xanh Taichung (Vigna radina L. Wilczek), được chọn làm giống đối chứng và 4 quần thể đột biến ở thế hệ M3 tương ứng với các mức nồng độ 0,2 phần trăm, 0,4 phần trăm, 0,6 phần trăm và 0,8 phần trăm EMS đã được gieo tại Nông trại, trường Đại học Cần Thơ vào vụ Xuân Hè 2015, để nghiên cứu biến dị kiểu gen và kiểu hình. Hệ số di truyền theo nghĩa rộng tiến bộ di truyền được tính cho các tính trạng chiều cao cây lúc chín, số trái cây, trọng lượng 100 hạt và năng suất hạt/cây. Thí nghiệm được bố trí theo kiểu khối hoàn toàn ngẫu nhiên, với ba lặp lại. Khoảng cách gieo là 45*20 cm, 2 cây/hốc. Kết quả cho thấy chiều cao cây lúc chín ở các nghiệm thức được xử lý EMS đều thấp hơn so với chiều cao cây ở giống đối chứng, năng suất và các thành phần năng suất đều có giá trị cao hơn so với giá trị ở nghiệm thức đối chứng.Taichung variety and four mutant populations in F3 generation with 0.2, 0.4, 0.6 and 0.8 percent concentration of EMS were sown at the Experimental Farm of Can Tho University, in 2015 Summer-Spring season. The genotypic and phenotypic variances, broad sense heritability and genetic advance for plant height at maturity, pod number per plant, 100 seed weight and seed yield per plant were evaluated. The experiment was designed in Randomized Complete Block Design with three replications and spacing 45x20 cm, two plants per hill. Taichung variety without EMS was selected as control. Results revealed that plant height at maturity were shorter than those on Taichung variety at four doses of EMS Yield and yield components were higher than contro!' The phenotypic coefficient oj variation (PCV) was higher than genotypic coefficient variation (CCV) jar all traits. The highest CCV was 36.06 percentfor seed yield per plant at 0.4 percent EMS Meanwhile, the highest PC V was 41.21 percent for seed yield per plant at 0.2 percent EMS The control gave lowest CCV (6.44 percent) and PCV (8.96 percent) for plant height at maturity. The highest heritability in broad sense gave 85.42 percent at 0.4 percent EMS for seed yield per plant. The expected genetic advance was 68. 66 percent at 0.4 percent EMS jar seed yield per plant. The lowest heritability was 32.62 percent for pod per plant. The lowest genetic advance was 9.55 for plant height ht maturity in the control. The values of all the genetic parameters reached maximum at 0.4 percent EMS.

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