Role of Leaf Appearance Rate and the Coleoptile Tiller in Regulating Production
Role of Leaf Appearance Rate and the Coleoptile Tiller in Regulating Production
复制标题
出叶率和胚芽鞘分蘖在调控生产中的作用
DOI：
10.2135/cropsci1994.0011183x003400010013x
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
C. J. Nelson
中科院分区：
文献类型：
--
作者：
R. Skinner;C. J. Nelson
高羊茅（Festuca arundinacea Schreb.）取决于现有叶片的伸长以及新叶和分蘖的产生。然而，对高叶伸长率（LER）的遗传选择导致植物具有有限的分蘖能力。我们的目的是研究如何发展的个别叶片和分蘖影响总分蘖生产高羊茅选择高或低LER的人口。幼苗在500 μ molm-2s-1 PPFD、14 h光周期的控制环境箱中生长32 ~ 70 d。低LER（高分蘖）群体产生的胚芽鞘分蘖数是高LER群体的2倍，经过4个分蘖生产周期后，胚芽鞘分蘖数及其后代占单株分蘖数群体间差异的80%
Forage production in tall fescue (Festuca arundinacea Schreb.) depends on elongation of existing leaves and production of new leaves and tillers. Genetic selection for high leaf elongation rate (LER), however, results in plants with limited tillering capacity. Our objective was to examine how the development of individual leaves and tillers affects total tiller production in populations of tall fescue selected for high or low LER. Seedlings were grown for 32 to 70 d in controlled environment chambers (500 μmol m -2 s -1 PPFD, 14-h photoperiod). The low LER (high tillering) population produced twice as many coleoptile tillers as the high LER population, and coleoptile tillers and their progeny accounted for 80% of the difference between populations in tillers per plant after four tiller production cycles