目前,全苏作物栽培研究所共收集有34万份样本,作为创造新品种的原始材料,其中仅小麦就有7.53万份。这样大量的材料用每年重播的方法保持其生命状态,物质上的消耗很大。此外,经常重播,不能保存原来样本有份值的遗传特性,认为可能发生偶然的异花授粉、病原性生物的影响,以及极端异常因素在生殖器官的发生和发育时对植物的作用,是不能保存遗传学特性和良种种性的原 At present, the Institute of Crop Cultivation of the Soviet Union collected a total of 340,000 samples as raw materials to create new varieties, of which only 75,300 wheat. Such a large number of materials replay each year to keep their way of life, material consumption is large. In addition, regular rebroadcasting can not preserve the genetic characteristics of the original sample with a share value, believing that accidental cross-pollination may occur, the influence of pathogenic organisms, and the role of extreme anomalies on plants in the development and emergence of reproductive organs Preservation of genetics traits and good seed variety of the original