草地学报

草地学报 ›› 2017, Vol. 25 ›› Issue (6): 1300-1307.DOI: 10.11733/j.issn.1007-0435.2017.06.021

• 研究论文 • 上一篇    下一篇

不同光周期条件下金花菜F2代农艺性状的变异特征

周克友1, 李争艳3, 陈祥1, 任海龙1, 江舟1, 魏臻武1   

  1. 1. 扬州大学动物科学与技术学院/扬州大学草业科学研究所, 江苏 扬州 225009;
    2. 新疆农业科学院海南三亚农作物育种试验中心, 海南 三亚 572014;
    3. 安徽省各科院畜牧兽医研究所, 安徽 230031
  • 收稿日期:2017-02-09 修回日期:2017-10-21 出版日期:2017-12-15 发布日期:2018-03-30
  • 通讯作者: 魏臻武,E-mail:zhenwu_wei@hotmail.com
  • 作者简介:周克友(1993-),男,江苏盐城人,硕士研究生,主要从事牧草种质资源评价与利用研究,E-mail:keuchow@hotmail.com
  • 基金资助:

    中原湿润区紫花苜蓿高效种植技术研究与示范（201403048-6）；国家自然科学基金项目（30972136，30671486）；江苏现代农业（肉羊）产业技术体系如东推广示范基地（SXGC[2017]078）；三亚市科技成果转化项目“新型叶菜金花菜及设施栽培技术示范与推广”（2017CZ09）；江苏省普通高校研究生科研创新计划项目（CXLX_1429）资助

Study on Variation Character of Medicago polymorpha F2 Generation under Different Photoperiods

ZHOU Ke-you1, LI Zheng-yan3, CHEN Xiang1, REN Hai-long1, JIANG Zhou1, WEI Zhen-wu1   

  1. 1. College of Animal Science and Technology/Institute of Forage and Grassland Science, Yangzhou University, Yangzhou Jiangsu Province 225009, China;
    2. Crops Selection Experiment Center of Xinjiang Academy of Agricultural Sciences, Sanya, Hainan Province 572014, China;
    3. Institute of Animal Husbandre and Veteinary of Anhui Acadermy of Agricultural Sciences, Hefei, Anhui Province 230031, China
  • Received:2017-02-09 Revised:2017-10-21 Online:2017-12-15 Published:2018-03-30

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摘要：

通过在人工气候室内模拟10 h短日照和16 h长日照2种光周期，对来自江苏海安和浙江温岭的2种性状差异明显的金花菜材料进行了不同光周期条件下的开花诱导试验，研究了不同光周期条件下金花菜杂交F2代株高、叶长、叶宽和分枝数的变异特征。结果表明：在不同光周期条件下，金花菜F2代株高、叶长和叶宽都服从正态分布，而分枝数不服从正态分布；在不同光周期条件下，金花菜F2代株高、叶长和叶宽都表现为极显著差异（P<0.05），而分枝数表现为显著差异（P < 0.05）；在不同光周期条件下，金花菜F2代分枝数的变异都最为突出并且都倾向于分枝数为1的母本P2；本研究得出金花菜属于长日照植物。可以利用此特性进行短日照诱导延长金花菜生育期，改善目标性状，增加刈割茬数，获得高产。在金花菜的育种中，凭此特性还可以选育优质高产品种。

关键词: 金花菜, 日照条件, F2代, 农艺性状, 变异特征

Abstract:

In order to analysis the variation feature of plant height, leaf length, leaf width and branching number of Medicago polymorpha F2 generation under different daylengths, this paper measured the flowering induction experiment of 2 different varieties of Medicago polymorpha from Haian Jiangsu and Wenling Zhejiang, respectively, under 10 h short daylength and 16 h long daylength using artificial climate chamber. The results showed that plant height, leaf length, leaf width of Medicago polymorpha F2 generation obeyed normal distribution, while branching number disobeyed normal distribution under different daylengths; Medicago polymorpha F2generation had highly significant difference(P < 0.01)in plant height, leaf length, leaf width trait and significant difference (P < 0.05) in branching number under different daylengths. Variation feature of branching number was obviously in Medicago polymorpha F2 generation, which tended to be the female parent P2 that branching number was 1. This paper also found that Medicago polymorpha was a long-day plant. Through this character, short daylength could be used to prolong growth period of Medicago polymorpha, improve target traits, increase the number of cutting and obtain high yield. In the breeding, varieties with high quality and high yield could be created through this character.

Key words: Medicago polymorpha, Photoperiod, F2 generation, Agronomic character, Variation feature

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