小麥葉片出生與穗分化關係的研究

Relationship between Leaf Emergence on Main Stem and Spike Differentiation Stages in Wheat

李存東(Cun-Dong Li)；曹衛星(Wei-Xing Cao)；羅衛紅(Wei-Dong Luo)；劉鐵梅(Tie-Mei Liu)

小麥 ； 葉齡 ； 葉齡餘數 ； 葉齡指數 ； 穗分化 ； Wheat ； Leaf number ； Remaining leaf primordium number ； Leaf number index ； Spike differentiation

中國農業科學

33卷1期（2000 / 02 / 01）

33 - 38

簡體中文

以小麥冬性品種京411和春性品種揚麥158爲材料，於9月30日（早播）、10月30日（適期播種）和3月2日（晚播）分期播種。研究得出，葉齡與穗分化時期的對應關係因品種。播期而異；葉齡餘數與主要穗分化時期的關係在適播條件下品種間十分接近。葉齡指數與穗分化的關係因品種而異，但不同播期間差異較小。結果初步揭示了小麥葉齡、葉齡餘數、葉齡指數與穗分化進程的相互關係，爲作特栽培調控和生長模擬提供了依據。

The study included two types of varieties: winter type variety (WV) ”Jing 411” and spring type variety ”Yangmai 158” and three sowing dates: Sept. 30(EP), Oct. 30(MP), Mar. 2(LP). It was found that leaf numbers on main stem at all spike differentiation stages (SDS) varied with variety and sowing date. Remaining leaf primordium numbers within variety were very similar at major SDS of MP. Differences of leaf number index at all SDS varied with variety, but were very low between different sowing dates. The results elucidated the fundamental relationships between emerged leaf number, remaining leaf primordium number, leaf number index and spike differentiation progress and supported cultural regulation and growth modeling in wheat.