玉米籽粒脱水评价指标与收获期判断标准的辨析  

Analysis of Maize Seed Dehydration and Harvest Evaluation Indexes

作　　者：宋朝玉[1] 朱丕生[1] 高峻岭[1] 王圣健[1] 李振清[1] 宫明波[1] 

机构地区：[1]青岛市农业科学研究院,山东青岛266100

出　　处：《山东农业科学》2015年第8期20-24,共5页Shandong Agricultural Sciences

基　　金：山东省现代农业产业技术体系建设专项(SDAIT-01-022-13)

摘　　要：通过对玉米籽粒灌浆、脱水过程的分析,指出玉米"脱水速率"概念的错误之处,提出以"净脱水速率"作为玉米脱水动态评价指标;先玉335比郑单958籽粒脱水快的优势在于其前期脱水快;黄淮海区域代表性玉米品种的实际收获期早于生理成熟,东北春玉米品种生理成熟早于收获期。玉米育种研究应该以收获期籽粒含水率为成熟标准,以收获时干重最大为育种目标。Through the analysis of maize grain grouting and dehydration process,the mistake of the maize ＂ dehydration rate＂ was pointed out; the ＂ net dehydration rate＂ was put forward as the evaluation index of maize dehydration dynamic; the advantage that dehydration of XY335 was faster than ZD958 was that its early dehydration was quick; the harvest time of Huang- huai- hai region representative maize varieties was earlier than physiological maturity while it of the northeast spring maize varieties was opposite. The grain moisture of harvest should be the mature standard and the dry weight of maximum at harvest time should be the breeding goal in maize breeding.

关 键 词：玉米 净脱水速率 生理成熟 乳线 黑色层 收获期 

分 类 号：S513.09[农业科学—作物学]