作物学报2000，Vol.26Issue(2)：222-230,9.
小麦增小穗育种方法与新种质资源拓宽研究
A Breeding Method for Increasing Spikelet and Studies on Creation of New Germplasm Resource in Wheat
李维平 1赵文明2
作者信息
- 1. 西安交通大学,陕西西安,712000
- 2. 西北农林科技大学,陕西杨凌,712100
- 折叠
摘要
Abstract
The aim of the study is to create a new genetic resource and to solve problem about late maturing and withered grain in more spikelet wheat, and to set up a new method for high yield breeding in wheat. The new method is called double dominant by stages increasing spikelet breeding method. It is set up by three crossing with a few spikelets but early ripe variety (line) and a more spikelets but late ripe wheat. Double dominant is more spikelets and early maturing to combine and to show clearly hybrid vigor in F1. By stages is to do more crossing time to step by step increasing No. spikelets. By three stages crossing, the main results of the study are as follows: 1. The new genotypes were developed and its number of spikelets has been raised form 24 to 38, and early ripe genotypes with 27-30 spikelets. 2. A dominant spikelet gene has been discovered in wheat. 3. The new genotypes have a high rate of spikelet initiation. It is 21.73% higher than that of regular varieties (ck). 4. The genotypes have a fast grain full stage. 5. The relation of cultivation condition and potential of yield has been studied too.关键词
小麦/多小穗/新种质/幼穗分化/籽粒灌浆/产量Key words
Wheat/More spikelet (multispikelet)/Germplasm/Spikelet Initiation/Full grain/Yield分类
农业科技引用本文复制引用
李维平,赵文明..小麦增小穗育种方法与新种质资源拓宽研究[J].作物学报,2000,26(2):222-230,9.
