双季茭白新品种‘余茭4号’的特征和特性  

Characteristics of Yujiao No.4,a new cultivar of double-cropping wild rice,Zizania latifolia

作　　者：符长焕 郑许松[2] 翁丽青 郑春龙 

机构地区：[1]余姚市农业科学研究所,浙江余姚315400 [2]浙江省农业科学院植物保护与微生物研究所,浙江杭州310021 [3]余姚市河姆渡镇农技站,浙江余姚315400

出　　处：《浙江农业学报》2012年第1期22-25,共4页Acta Agriculturae Zhejiangensis

基　　金：国家星火计划(2007EA701007)"万亩茭白无害化生产关键技术的集成示范"

摘　　要：‘余茭4号’是从‘浙茭2号’优良变异单株中筛选出来的新品种,其特征表现:1)株型高大,分蘖能力和‘浙茭2号’接近;2)秋茭单个壳茭重达163.8 g,肉茭重113.0 g,长24.0 cm,粗4.0 cm,产量1 194.7 kg.667m-2,较‘浙茭2号’增产42.14%,产茭时间为11月4日至12月9日,较‘浙茭2号’推迟22 d;3)夏茭单个壳茭重120.3 g,肉茭重73.7 g,长16.5 cm,粗3.5 cm,产量3 093.0 kg.667m-2,较‘浙茭2号’增产20.40%,产茭时间与‘浙茭2号’相近;4)肉质茎个体大,商品性好,营养水平高。Yujiao No. 4, a new cuhivar of wild rice （ Zizania latifolia Turcz. ）, developed from the indigenous muta- tion wild rice lines of Zhejiao No. 2. Yujiao No. 4 with a strong plant type had a similar tillering capacity with Zhejiao No. 2. The gross weight and net weight of fleshy stem （24. 0 cm in length, 4. 0 cm in diameter） in autumn cropping were 163.8, 113.0 g. The yield in autumn cropping was 1 194. 7 kg-667m-2, increased by 42. 14% compared to Zhejiao No. 2 and the harvest time of autumn cropping was from November 4th to December 9th, delayed 22 d com- pared to Zhejiao No. 2. The gross and net weight of fleshy stem （ 16. 5 cm in length, 3.5 cm in diameter） in summer cropping were 120. 3 and 73.7 g, respectively, the yield in summer cropping was up to 3 093.0 kg＇667m-2, 20.40% more than Zhejiao No. 2, while the harvest time of summer cropping was similar with Zhejiao No. 2. Fleshy stem of Yujiao No. 4 with big size and high level nutrient may gain a good reputation in commercial market.

关 键 词：茭白 双季茭 选育 余茭4号 特征特性 

分 类 号：S645.2[农业科学—蔬菜学]