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进行杂交高粱制种和不育系繁殖时,需要做好花期预测,提前知道花期能否相遇,以便采取措施,使其相遇。花期预测方法很多,这里介绍一种简单易行的方法——叶片解剖法。高粱长到十～十二个叶片时,选择地力均匀,生长整齐一致的地段,拔取有代表性的父母本各二株,分别将植株叶片从向外里剥开,并记录每株没有伸出的叶片数。如父本没伸出的叶片数比母本多一～二片,说明母本比父本发育早一～
For hybrid sorghum and CMS breeding, the need to do a good job of flowering forecast, flowering in advance to know whether to meet in order to take measures to meet. There are many flowering prediction methods, here is a simple and easy method - leaf anatomy. When sorghum grows from ten to twelve leaves, choose a uniform fertility, neatly growing lots, take two representative parents of each plant, respectively, the plant leaves peeled from the outside, and recorded that each plant did not stick out The number of leaves. If the father did not extend the number of leaves more than the mother one ~ two, indicating that the female parent than the male parent early development ~