‘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 cultivar of wild rice (Zizania latifolia Turcz. ), developed from the indigenous mutation 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 werel63.8, 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 compared 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.
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