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一、郑单二号玉米标准:(一)来源:郑单二号系河南省革委农林科学院子1969年以塘四平头自交系作母本,获白自交系作父本育成的单杂交种。(二)特征特性:1、种子性状:粒白色有光泽,属中间型,品质良好,粒大而扁,千粒重320—380克,最高可达412克,籽粒厚
First, Zheng Dan No. 2 corn standards: (A) Source: Zheng Dan II Henan Institute of Agriculture and Forestry Agriculture and Forestry Sciences in 1969 to Tong Siping first inbred line as the female parent, was white inbred lines as the parent bred single Hybrids. (B) Features: 1, seed traits: grain white shiny, is an intermediate type, good quality, large and flat tablets, grain weight 320-380 grams, up to 412 grams, grain thickness