早籼多穗大穗优质不育系灵红A的选育及应用

The breeding and application of Linghong A of an early indica rice's male sterile line that has many spike, big spike and quality traits

灵红A是以汕A为母本,用自选的灵红占为父本杂交转育而成的野败型多穗大穗优质不育系。灵红A不育性稳定,柱头发达外露率高,异交结实率高,易于繁殖制种,而且抗性较强,农艺性状尚好。灵红A配组杂种优势大,优质性状遗传力强,杂种一代产量高、米质优。该不育系于2000年7月通过技术鉴定。灵优359(灵红A×B特恢-4)已进行多年多点试制试种示范,表现中熟高产优质多抗。在桂中作早晚稻种植,桂南和广东作早稻种植,桂北、湖南、湖北、江西、福建等省区作晚稻种植,表现生长势旺,早生快发,分蘖多,抗性强,易获高产,一般产量7500kg/hm2,高产的达9000kg/hm2以上,比主栽组合增产500kg/hm2左右,而且米质优。

Linghong A is a wild abortive type of male sterile line that has many spikes,big spikes and quality traits. Its choiceness traits are as follows: having steady sterile degree, having upgrowth stigma and high out stigma rate, easy to propagate seed, strong resistance, good agronomic traits, big heterosis, high heritability of quality traits, high yield and good quality of F1,and so on.The male sterile line had been passed the technical identify in July, 2000. Linghong 359 (Linghong A×B Tehui-4) had carried through thousands plant experiments in different places several years ago. Lingyou 359 had been proved that it has a middle maturity, high yield and multiresistance. Additionally, its benefit is significant. Such as it was planted for early rice and late rice in middle of Guangxi.It was planted for early rice in south of Guangxi ,and it was planted for late rice in north of Guangxi,Hunan,Hubei,Jiangxi and Fujian.From the result we know Linghong A growth quickly in the first half of its growth period,and it has more tiller than CK.Additionally,it is easy to get high yield.Its yield allows get to 7500kg/hm^2,and the highest yield get to 9000kg/hm^2 and was 500kg/hm^2 higher than main rice species 500 kg/hm^2.And it has good quality traits.