Nghiên cứu nguồn gốc phát sinh các đợt lộc trong mối quan hệ với năng suất giống cam sành Bố Hạ trồng tại Thái Nguyên

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Tác giả: Quang Đãng Bùi, Trí Thức Bùi, Xuân Bình Ngô, Thị Tình Nguyễn, Tiến Dũng Nguyễn, Văn Duy Nguyễn, Hoàng Huyên Tống

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Thông tin xuất bản: Tạp chí Khoa học và Công nghệ Việt Nam - B, 2022

Mô tả vật lý: tr.34

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ID: 332297

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Trên đối tượng giống cam sành Bố Hạ 4 năm tuổi trồng tại Trường Đại học Nông Lâm, Đại học Thái Nguyên, kết quả nghiên cứu vật hậu cho thấy, có 4 đợt lộc theo mùa vụ hình thành nên 4 đợt cành chủ yếu, liên quan đến năng suất quả là cành vụ xuân, hè, thu và đông. Trong đó, 2 loại cành có ảnh hưởng quan trọng trong giai đoạn mang quả là vụ xuân hình thành loại cành quả (cành mang hoa và quả) và vụ thu với chức năng là nguồn cành mẹ của cành quả năm tiếp sau. Những năm cây ra nhiều quả (năm được mùa), cành vụ xuân chiếm tỷ lệ rất cao, trong khi tỷ lệ cành vụ thu rất thấp. Ngược lại, những năm cây ít quả (năm mất mùa), tỷ lệ cành vụ xuân rất thấp nhưng tỷ lệ cành vụ thu rất cao. Tỷ lệ cành vụ thu và năng suất quả năm sau của giống cam sành Bố Hạ có mối tương quan thuận tuyến tính chặt chẽ (r=0,81). Kết quả nghiên cứu là cơ sở khoa học quan trọng để xây dựng các giải pháp kỹ thuật nhằm điều tiết tỷ lệ cành vụ xuân và vụ thu phù hợp, đảm bảo cây cho năng suất cao và ổn định.With the four-year-old “cam sanh Bo Ha” cultivar grown at Thai Nguyen University of Agriculture and Forestry, Thai Nguyen University, results conducted from the phenology showed that: 4 seasoning branches named after the time duration originated, viz spring, summer, autumn and winter branches that were accordingly developed from different buds related closely to the yield of the trees in which the spring branches considered as flower and fruit bearers and the autumn ones considered as mother branches of the proceeded fruit bearers played an important role. It is also mentioned that a high percentage of the spring branch and low ratio of autumn one was recorded in the on-season year (heavy crop). In contrast, a low ratio of spring branch and a high ratio of autumn ones, were reported in the off-season (light crop). And, what is more, there existed a closely positive linear correlation between the ratio of autumn branches and fruit yield in the following year (correlation coefficient r=0.81). The study’s results should be of good basic for developing technical solutions to regulate the appropriate ratio of spring and autumn branches to ensure high and stable yield.

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