华南早籼超级稻幼穗第2次枝梗及颖花原基分化期理想形态性状研究  

Ideal Morphological Characteristics of South China Super Indica Rice at the Stage of Secondary Panicle Branch and Spikelet Primordium Differentiation in Early Crop

作　　者：陈友订[1] 张旭[1] 万邦惠[2] 

机构地区：[1]广东省农业科学院水稻研究所,广东广州510640 [2]华南农业大学农学院,广东广州510642

出　　处：《华南农业大学学报》2006年第3期113-114,117,共3页Journal of South China Agricultural University

基　　金：国家"863"项目子专题(2001AA211191);广东省科技创新百项工程(2KB64804N);广东省自然科学基金(990501)

摘　　要：对华南稻区最新育成的6个早籼超级稻品种（组合）在幼穗第2次枝梗及颖花原基分化期的主要形态性状进行研究，提出其理想形态性状的量化指标为：株高85～90cm；主茎叶片数11片左右（叶龄余数为2.2～2.9）；每蔸茎数18～20条；心叶下1叶长、宽分别为53～61和1．37～1．39cm；心叶下2叶长、宽分别为42-48和1.29-1．34cm：心叶开张角为10～22°．Morphological characteristics of the 6 newly released South China super indica rice cultivars were investigated at the stage of secondary panicle branch and spikelet primordium differentiation in early crop. According to the concept of ＂dynamic plant type structure＂, the ideal morphological characters of the plant type were determined as： the plant height is 85-90 cm, the leaf number on the main stem is about 11 （ the left leaf number is 2. 2-2. 9 ）, the filler number per plant is 18-20, the length and width of the first leaf under the top leaf is 53-61 cm and 1.37-1.39 cm,respectively ,the length and width of the second leaf under the top leaf is 42-48 cm and 1.29-1.34 cm ,respectively, and the top leaf angle is 10-22°.

关 键 词：华南早籼超级稻 幼穗第2次枝梗期 颖花原基分化期 形态学 

分 类 号：S511[农业科学—作物学]