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渝麦4号是重庆市农科所1980年用77—中—2882×巴麦18杂交,经8年9代选育而成。于1988年12月由重庆市农作物品种审定委员会通过审定命名。该品种长芒、白壳、叶耳紫红色。春性、早熟,比绵阳11迟熟2天左右。株高92厘米左右,株形紧凑,耐肥抗倒,分蘖力弱,成稳率高。穗长13～14厘米,小穗数26个左右,平均每穗65粒左右,中部小穗结实6～7粒,千粒重38克左右。经四川省植保所三年鉴定,其抗病性优于对照种绵阳11号;高抗条锈、叶锈病,感染白粉病,轻感赤霉病。主要品质指标经商业部四川绵阳粮食贮藏研究所分析:容重819.5克/升;出粉率73.01％;粗蛋白15.46％;湿面筋29.15％,是一个综合性状显著超亲的优质小麦新品种。
Yumai 4 is a Chongqing Institute of Agricultural Sciences in 1980 with 77-in -2882 × Baimai 18 cross, after 8 years of 9 generations of breeding. In December 1988 by the Chongqing Municipal Crop Variety Approval Committee passed the validation named. The variety Changmang, white shell, auricular purple. Spring, precocious, late maturing Mianyang 11 about 2 days. Height of about 92 cm, plant compact, resistant to lodging, tillering weak, into a high rate. Spike length of 13 to 14 cm, the number of spikelets about 26, an average of about 65 per spike, the middle spikelet 6 to 7 grains, 38 grain weight about 38 grams. Sichuan Province, three-year identification of plant protection, its disease resistance superior to the control Mianyang 11; high resistance to stripe rust, leaf rust, powdery mildew, and light scab. The main quality indicators by the Ministry of Commerce, Sichuan Mianyang Institute of Grain Storage Analysis: Bulk density of 819.5 g / l; flour yield of 73.01%; crude protein 15.46%; wet gluten 29.15%, is a comprehensive trait of super good pro-quality new wheat varieties.