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莜麦(Avena nada)是高寒地区人民的主要粮食之一,含蛋白质15.77%,营养丰富。但抗倒力差,严重影响产量。莜麦抗倒伏能力的高低受许多因素的影响。就莜麦矮秆来讲,除茎秆的内部结构(如皮层的厚度、维管束数目及其矽质化程度等)、茎秆的粗细、韧性外,株高对抗倒伏力具有决定性影响。本世纪七十年代初,国内莜麦育种单位从世界各燕麦生产国引入不少低(矮)秆燕麦品种作远缘杂交亲本,选育低秆抗倒伏、抗病、丰产的莜麦新品种。有关杂交后代的株高性状的遗传规律,尚未见报道。
Avena nada is one of the staple foods for the people in the alpine region. It contains 15.77% of protein and is rich in nutrients. But the anti-pound poor, seriously affecting the yield. The resistance of barley to lodging is affected by many factors. As for the dwarf barley, in addition to the internal structure of the stem (such as the thickness of the cortex, the number of vascular bundles and the degree of its silanization), the thickness and toughness of the stem, plant height has a decisive impact on lodging resistance. In the early 1970s, domestic barley breeding units introduced many low (short) stalk varieties of oats for distant hybridization from oat production countries in the world and breed new varieties of barley with low stalk lodging, disease resistance and high yield . There is no report on the genetic law of plant height traits in hybrids.