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一、前言羊草Aneurolepidium chinense (Trin)Kitagawa又名碱草,属根茎型多年生禾本科牧草,广泛分布在我国东北及内蒙古草原,华北及西北也有分布。羊草具有返青早、营养价值高、抗逆性强、适口性好等优良特性,因此栽培面积逐年扩火。但是,羊草的抽穗率、种子发茅率低和结实率低,严重影响着种子产量,给扩大种植面积带来了一定困难。为了寻找提高羊草结实率的途径,近年来我们结合高结实羊草的选育工作,对其结实特性、结实率低的原因作了初步探索。
I. Introduction Aneurolepidium chinense (Trin) Kitagawa, also known as Soda grass, is a rhizome perennial gramineous grass, widely distributed in northeastern China and Inner Mongolia grassland, there are also distributed in North China and Northwest China. Leymus chinensis has the characteristics of returning early greening, high nutritional value, strong resistance, good palatability and so on, so the cultivation area expands fire year by year. However, the rate of heading, low rate of seed germination and low seed setting rate of Leymus chinensis severely affected the seed yield, which brought some difficulties in expanding the planting area. In order to find a way to improve the fruiting rate of Leymus chinensis, in recent years, we combined with the selection and breeding of Leymus chinensis, and explored the reasons of its strong trait and low seed setting rate.