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早熟先质小麦504于1993年5月由陕西省农作物品种审定委员会通过了予审。501小麦是以八倍体小偃麦与普通小麦大穗78-3,79104等复合远缘杂交选育而成。半春性,早熟,一般比小偃6号早5～7天。株高80cm左右,抗倒状。叶片上挺,株型紧凑,适于麦棉、麦瓜、麦辣套种。穗长方形,长芒。白粒,籽粒饱满,容重高,全角质,千粒重38～40g。经农科院测试中心分析:蛋白质含量15.79%,干面筋含量13.01%,赖氨酸含量0.414%,粗脂肪含量1.51%。对条锈23.25.28.29号小种免疫,对条锈27号小种高抗;中感赤霉和白粉病。抗蚜虫,口紧较抗吸浆虫。
Premature mature wheat 504 in May 1993 by the Shaanxi Provincial Crop Variety Approval Committee passed. 501 wheat is octoploid Triterpenicillin and common wheat big spike 78-3, 79104 and other compound distant hybridization breeding. Spring, precocious puberty, generally 5 to 7 days earlier than Xiaoyan 6. Plant height about 80cm, anti-inverted. Leaves quite, compact plant type, suitable for wheat, maize, spicy interplanting. Spike rectangle, Changmang. White grains, full grains, bulk density, all cutin, 1000 grain weight 38 ~ 40g. Analysis by the Center for Agricultural Sciences: The protein content of 15.79%, dry gluten content of 13.01%, lysine content of 0.414%, crude fat content of 1.51%. Stripe rust 23.25.28.29 race vaccination, Stripe rust race 27 high resistance; in the sense of Gibberella and powdery mildew. Anti-aphids, mouth more resistant to inhalation insects.