不同分级粒型对玉米自交系种子活力及植株生长发育的影响

Effect of Different Grading of Grain on Maize Seed Vigor and Plant Growth

选用齐319、9801、昌7-2、郑58和Ph 6 wc 5个玉米自交系不同分级粒型种子为试验材料,通过种子长度、宽度、厚度及千粒重测定、幼苗生长测定、田间出苗率测定以及植株生长发育和成熟有关指标观测,研究不同分级粒型对玉米自交系种子活力及植株生长发育的影响。结果表明:5个玉米自交系4～5种分级粒型(大扁、大圆、小扁、小圆和不分级)中,均以大扁种子活力较高,大多数自交系分级粒型对抽雄盛期、株高、穗位高、开花始期、开花盛期、吐丝初期、吐丝盛期、成熟时间和穗粒数均无显著影响,而对收获种子千粒重均有显著影响。

Taking Qi 319,9801 ,Chang 7-2,Zheng 58 and Ph 6 wc,five maize inbred lines of different grading of grain seed as the test material, by seed length, width, thickness and weight determination, seedling growth test ,field seedling growth test, as well as plant growth and maturation index observation, had researched the influence on different grading grain of maize seed vigor and plant growth. The results showed that： among five maize inbred lines four to five grading grain type （big fiat, big round, small fiat, small round and no grading）, the seed vigor of big fiat was the highest. The majority of inbred line classification particle type on middle heading time period, plant height, ear height, blossom, blossom beginning period of flourishing period, spin, spin the flourishing period, early maturation time and grain number per spike showed no significant influence, but they has significant influence on the seed weight at harvest time.