Study on the breeding and screening of new pea cultivar of Guwan No.1

New cultivar of Lathyrus splendens cv. Guwan No. 1 was hybridized with 6 parent materials and 60Go radiation induction, which was a medium early repining cultivar with 90 to 95 days of growth period, 75 cm of plant height, and 220 g of thousand seed weight. The pod was flatlong shape, 5 to 8 cm of length and 1.1 cm of width, with 5 to 8 seeds per pod. Its contents of crude protein, crude starch, lysine and crude fat were 25.39%, 54.54%, 1.98% and 1.42% respectively. In the field experiment, the disease resistance was similar to the CK (Deying No. 2). The multiplesite experiments in Gulang indicated that the average yield was 6 411.0 kg/hm2, which was 36.5% higher than that of CK (Ma). In 3year production experiments in Wuei showed that the average yield was 5 102.4 kg/hm2, which was 15.8% higher than the CK. The study results suggested that it could be extended in Liangzhou County, Gulang County and Tianzhu County of Wuwei City and those semiarid areas with similar climate conditions such as Zhangye and Baiyin of Gansu province, Ningxia and Inner Mongolia where the irrigation was available.