Method for breeding high-yield disease-resistant collard
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A high-yield technology for kale, which is applied in the field of rapid breeding of hybrid kale for feed using cytoplasmic male sterile lines, can solve the problems of less breeding of new kale species, and achieve shortened breeding time, juicy and resistant strong reverse effect
Active Publication Date: 2014-12-03
南京利华农业科技有限公司
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At present, many new varieties of fine edible or ornamental kale have been selected and bred in various places, and have passed the national or provincial (district, city) level approval, and are popularized in various regions, but there are relatively few new varieties of hybrid kale used as feed.
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[0024] In the first ten days of April of the first spring, the high-yield, disease-resistant, cold-resistant, and barren-tolerant head cabbage cytoplasmic male sterile source "Green Ball" was used as the female parent, and the stable high-yield, disease-resistant, cold-resistant, barren-tolerant, and lobed scarlet The kale inbred line 03-4 was crossed first, and 82 seeds were obtained in mid-June; it was planted together with the kale inbred line 03-4 in early August, and the offspring were selected from a single plant close to the backcross male parent in the second year Continue to backcross with the female parent in April in the spring, and obtain 110 seeds in mid-June, sow with the kale inbred line 03-4 in early August, and plant, and the offspring choose a single plant that is close to the backcross male parent. Spring 4 of the third year Continue to backcross with the female parent in May, and backcross 5 generations in turn. In the sixth year, the cytoplasmic male steril...
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Abstract
The invention discloses a method for breeding high-yield disease-resistant collard. The method comprises the following steps: by taking a cytoplasmic male sterility source'green ball' as a female parent, hybridizing with a selfing line 03-4, performing backcross on five generations, thereby obtaining cytoplasmic male sterility CMS05; by taking the cytoplasmic male sterility CMS05 as a female parent, hybridizing with a selfing line 05-1, thereby obtaining a first-filial generation CMS061; and hybridizing the first-filial generation CMS061 and a selfing line 05-7, thereby obtaining curly leaf dark red collard'Fengyu' which is high in yield, disease-resistant, cold-resistant, infertility-resistant, high in stress resistance and easy to cultivate. According to the method, the labor and cost can be obviously saved, the breeding time is greatly shortened, the bred variety can partially remain hybrid vigor of the original hybrid variety in a novel hybrid variety, and the obtained product has the advantages of strong plant growth vigor, thick leaves, bright color, juiciness, high yield, disease resistance, cold resistance, infertility resistance and high stress resistance and is high-quality feed of dairy cattle, the net weight of a single plant is over 80kg, 3000 plants are cultivated per mu, and the yield is 24000kg per mu.
Description
technical field [0001] The invention relates to a breeding method of high-yield and disease-resistant kale, in particular to a rapid breeding method for preparing hybrid kale for feed by using a cytoplasmic male sterile line, and belongs to the technical field of plant cultivation. Background technique [0002] Kale (Brassica oleracea var. acephala f. tricolor.) is a biennial herbaceous plant grown in China and many countries in the world. It is a horticultural variety of edible cabbage (cabbage). The plant forms a rosette-shaped leaf cluster, which can be divided into tall and short types according to height; according to the shape of leaves, it can be divided into wrinkled leaves, unwrinkled leaves and deeply split leaves; according to color, the edge leaves are emerald green, dark green, gray green, yellow Green, and the center leaves are pure white, light yellow, flesh-colored, rose red, purple and other varieties. Among them, the calcium content rate is 10%, vitamin A1...
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