菲律宾政府种子局又命名3个由国际水稻研究所(IRRI)杂交育成的水稻新品种。并在菲国本上首先推广。 IR58选自IR28/广场矮//IR 36的杂交后代,其株系代号为IR9752-71-3-2。该品种在菲国的生态条件下,全生育期100天,高抗东戈罗病和稻瘟病,且抗褐飞虱生物型I和Ⅱ,其稻米蒸煮食味与IR36相似。在吕宋(Luzou)和威沙亚士己为稻农所使用。该品种引进我所进行试种观察后,具有矮秆、分蘖力强,早熟的特点,1983年5月1日播种,5月15日移栽,6月20日抽穗,第二次于6月23日播种,9月13日齐穗。其株形特征与以往IR编号的品种有较大不同。 IR60是从IR4432-53-33/PTB33 The Philippine Government Seeds Office also named three new rice varieties bred from the International Rice Research Institute (IRRI). And in the Philippines first to promote this. IR58 is selected from the hybrid progeny of IR28 / Escherichia coli // IR36 and has strain code IR9752-71-3-2. Under the ecological conditions of the Philippines, the variety has 100 days of full growth period, highly resistant to East Goo disease and rice blast, and has resistance to brown planthopper biotypes I and II. Its rice cooking tastes are similar to those of IR36. Rice farmers have been used by Luzou and Weshaas. The species introduced after my observation, with dwarfing, strong tillering ability, early maturity, sown May 1, 1983, May 15 transplanting, June 20 heading, the second in June Seeding on the 23rd, September 13 full heading. The plant shape and the previous IR number of varieties are quite different. IR60 is from IR4432-53-33 / PTB33