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Journal of Agriculture ›› 2015, Vol. 5 ›› Issue (6): 5-9.doi: 10.11924/j.issn.1000-6850.cjas14110004

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Influence of Seed Produced in Different Year and Place to Yield and Correlating Analysis of ‘Ditian6’

  

  • Received:2014-11-13 Revised:2014-11-27 Accepted:2014-11-28 Online:2015-07-29 Published:2015-07-29

Abstract: In order to analyze the influence of seeds which were produced in different years and places on the germination rate, the field emergence rate, the weight of single ear and yield in super sweet corn, the authors took ‘Ditian6’ as the tested material for the study. Its seeds that produced in three years (A1 2010; A2 2011; A3 2012) and two places (B1 Pingyao; B2 Hainan) were used for indoor germination experiment and field measurement. The results showed that seed production year saw greater impact on the four indexes, which were the seed germination rate, the field emergence rate, single panicle weight and yield. In addition to yield, effects of seed origin on the other three indicators were not great. The seed germination rate and field emergence rate of ‘Ditian6’ showed a downward trend with seed produced more years before. The germination rate and field emergence rate are highly significant different among three treatments of seed production year. But the germination rate and field emergence rate had no significant difference between two treatments of seed production site. Interaction of the two treatments was not obvious. Seed produced in different years and places hadn’t great influence on the weight of single ear. The single panicle weight of different treatments were in order as A3B1 > A3B2 > A2B2 > A1B2 > A2B1 > A1B1. Effect of seed production year and origin on yield reached extremely significant level. Significant interactive effects between two treatments were obtained. Treatment A3B2 had the highest yield of 14235 kg/hm2. For ‘Ditian6’, the field emergence rate and germination rate were positively correlated. What's more, yield and seed germination rate, field emergence rate as well as single panicle weight of ‘Ditian6’ were positively related.