作物学报Issue(12)：2160-2168,9.DOI:10.3724/SP.J.1006.2014.02160
水稻甬优12不同产量群体的株型特征
Plant-type Characteristics in Populations with Different Yield of Yongyou 12
摘要
Abstract
Using indica-japonica super rice Yongyou 12, we compared the plant-type characteristics among three types of popula-tions (high yield: 10.5–12.0 t ha–1; higher yield: 12.0–13.5 t ha–1; super-high yield: >13.5 t ha–1). The main results indicated that in super-high yield population, the mean values of panicle length, total grains per spike, number of the primary and secondary ra-chises were 21.56, 356.34, 20.46, and 73.98, respectively, being higher than those in the high and higher yield populations. How-ever, the seed-setting rate in the primary and secondary rachises showed slight reduction. Super-high yield population had longer length, larger width and higher rolling rate, smaller leaf basic angle and dropping angle, more green leaves after heading for the top-most three leaves in comparison with the other two populations. Compared with the other two populations, super-high yield population had higher plant height, longer length of top three internodes, higher ratio of sum of panicle and neck internode to plant height 39.84% and ratio of neck internode to stalk length 37.75%. The decreased length of basal three internodes, increased culm diameter, culm wall thickness and dry weight of culm and sheath made higher anti-broken strength and lower lodging index in super-high yield population.关键词
甬优 12/超高产/株型特征Key words
Yongyou 12/Super-high yielding/Plant-type characteristics引用本文复制引用
韦还和,许轲,魏海燕,郭保卫,李超,张洪程,孙玉海,马荣荣,王晓燕,杨筠文,戴其根,霍中洋..水稻甬优12不同产量群体的株型特征[J].作物学报,2014,(12):2160-2168,9.基金项目
本研究由农业部超级稻新品种选育与示范项目(02318802013231),国家公益性行业(农业)科研专项(201303102)和宁波市重大科技项目(2013C11001)资助。 （02318802013231）
