Breeding method for triploid cassava
A technology of triploid and cassava is applied in the field of selection and breeding of triploid crop varieties to achieve the effects of easy operation, improved breeding efficiency and high success rate
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[0015] Selected cassava varieties GR891 and Huanan 124 were planted in March 2004 or the branches of the previous year’s cassava were cut off. When the cassava growth height or branch length reached 40-50 cm, the top was removed. Take off the top for about a week, wrap the axillary bud growth point with cotton, and drop 3-4 drops of colchicum solution with a weight concentration of 0.4% on the cotton with a dropper at 8-11 a.m. every day. After 3-4 days, stop dripping the medicine, observe the leaves, and cut off the stems at the upper part of the leaves with large variation points, thickening and curling, so that the axillary buds can germinate again. After 2-3 times of cutting and separation, GR891, and South China All the leaves of 124 become thicker, shorter, and darker branches, then carry out cutting propagation of young branches or green branches, carry out ploidy identification of chromosomes, and cultivate completely mutated tetraploid GR891-4X and Huanan 124-4X strain...
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