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多抗耐瘠优质丰产冬小麦新品种灵选6号选育报告

2021-09-12朱浩军李贵喜黄勇郭景致张治存

甘肃农业科技 2021年8期
关键词:选育报告

朱浩军 李贵喜 黄勇 郭景致 张治存

摘要:冬小麦新品种灵选 6号是以Q104-3为母本、兰天16号为父本有性杂交,经过多年连续自然淘汰和人工选择选育而成。在2016 — 2018年进行的甘肃省陇东片区域试验中,2 a 14点(次)有10点(次)增产,平均折合产量4 330.5 kg/hm2,比对照品种陇育4号增产9.4%。该品种属强冬性中熟小麦品种,生育期 275 d。株高 85 cm,穗长 7~8 cm,千粒重 46.8 g,容重 791.5 g/L,籽粒含粗蛋白(干基)138.7 g/kg、湿面筋 257.3 g/kg、粗淀粉(干基)653.4 g/kg、灰分(干基)17.8 g/kg,沉降值 31.2 mL,属强筋冬小麦。综合抗病性好,高抗条锈病,中抗白粉病,抗寒、抗旱性强,抗倒伏。适宜在陇东冬麦区的平凉、庆阳及周边生态类似地区种植。

关键词:冬小麦;新品种;灵选6号;选育;报告

中图分类号:S512.1     文献标志码:A      文章编号:1001-1463(2021)08-0012-05

doi:10.3969/j.issn.1001-1463.2021.08.004

Abstract:Lingxuan 6 is a new winter wheat cultivar, bred by sexual crossing with Q104-3 as female parent and Lantian 16 as male parent, after years of continuous natural elimination and artificial selection. In 2016 — 2018, the average yield of 2 a 14 sites(times) was 4 330.5 kg/hm2, which was 9.4% higher than that of the control cultivar Longyu 4 in Regional Trail in Gansu Longdong. It is a strong winter medium  maturing wheat cultivar with the growth period is 275 days. The plant height is 85 cm, the ear length is 7~8 cm, the 1000-grain weight is 46.8 g, the bulk density is 791.5 g/L. The grain contains crude protein(dry basis) is 138.7 g/kg, wet gluten is 257.3 g/kg, crude starch(dry base) is 653.4 g/kg, ash(dry basis) is 17.8%, sedimentation value is 31.2 g/mL, which belongs to strong gluten wheat. It has good comprehensive disease resistance, stripe rust immunity, medium resistance to powdery mildew, strong cold resistance, drought resistance, lodging resistance. It is suitable to be grown in planted in Pingliang, Qingyang and other ecologically similar areas in Longdong winter wheat region.

Key words:Winter wheat;New cultivar;Lingxuan 6;Breeding;Report

冬小麥是陇东地区的重要粮食作物,常年播种面积40万hm2左右,约占甘肃省冬小麦播种面积的一半,冬小麦生产对甘肃省粮食安全和农村经济发展有着举足轻重的作用[1 - 4 ]。但陇东地区地形复杂,气侯多样,干旱少雨,病虫危害严重,特别是机收机播品种保纯难度大,加之十年九旱导致冬小麦产量低而不稳,严重威胁着该区冬小麦生产发展。陇东干旱、寒冷的气候特点,要求小麦品种有很强的抗旱、抗寒以及高抗病的特性。陇东地区也是小麦条锈病西北流行区,为菌源越夏和越冬区的桥梁地带,而相邻的陇南又是条锈菌生理小种易变区[5 - 6 ],要求品种不仅要高抗条锈菌,而且要具有不同的亲本抗源。由于降水不同年份偏差较大,品种要求不但要耐旱,而且要耐涝,抗倒伏、抗穗发芽[7 - 8 ]。……

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