STUDY ON THE HIGH-YIELDING PHYSIOLOGICAL CHARACTERS OF THE NEW VARIETY OF SWEET POTATO FUSHU 87

The new variety of sweet potato Fushu 87 was produced by crossbreeding the female parent variety Chaoshu 1 and many male parent varieties in 1980.It underwent the F1 generation choice of the ecological adaptability experimentation of seven points in 1981.During 1983-86, experiments on the ecological adaptation and high yield were conducted in 46 localities.The experimental results indicated that the new variety of sweet potato Fushu 87 possessed the good characters of high yield, wide adaptability, drought resistance,firm resistance to Fusarium bubligenum f. batata Wr.etc.Reasonable cultivating measures to get high yield were given and discussed.In the four years of 1983-86, the total sown area in Fujian amounted approximately to 350 thousand mu. If the yield increased by 50 kilograms of dry sweet potato per mu, the total yield increased was* 17.5 million kilograms. In 1985 Fujian Committee for Identification of Farm Crop Varieties identified it to be one of the excellent varieties for popularization in Fujian.