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钱江2号A是浙江省农科院作核所选育的野败籼型中早熟不育系。该不育系农艺性状好,株型理想;柱头外露率47.1%,其中双柱头外露率22.4%;不育性稳定,花粉败育率达100.00%,其中碘败率98.37%;异交结实率好,繁种田不育系结实率为49.1%;米质较优,整精米率(63.7%)、透明度(1级)、碱消值(6.0级)、胶稠度(81 mm)、蛋白质含量(12.2%)等5项指标达部颁食用籼稻品种品质一级标准;抗性较好,中抗稻瘟病;配合力较好,可恢复力强;繁制种产量高。于2006年10月通过浙江省科技厅成果鉴定。
Qianjiang No.2 A is a wild-type indica-type early-maturing CMS line selected by Zhejiang Academy of Agricultural Sciences. The agronomic traits of the CMS lines were good and their plant type was ideal. The stigma exsertion rate was 47.1%, of which the stigma exsertion rate was 22.4%. The sterility was stable and the pollen abortion rate was 100.00% Good, the seed setting rate of 49.1% of male sterile lines; better quality rice, milled rice rate (63.7%), transparency (grade 1), alkaline consumption value (6.0), gel consistency (81 mm), protein content 12.2%) and other five indicators up to the ministerial indica rice varieties of a quality standard; better resistance to blast resistance; better combining ability, recoverability; In October 2006 through the Zhejiang Provincial Science and Technology Department of achievements appraisal.