1. Effect of Planting Methods on Differentiation and Retrogression of Branches and Spikelets of Hybrid Rice Cultivar
- Author
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Wang Li, Liu Li, Deng Fei, Ren WanJun, Liu DaiYin, and Lei XiaoLong
- Subjects
Agronomy ,Seedling ,food and beverages ,Sowing ,Transplanting ,Seeding ,Plant Science ,Cultivar ,Biology ,biology.organism_classification ,Agronomy and Crop Science ,Biotechnology ,Panicle - Abstract
In order to explore the characteristics in spikelets formation of hybrid rice with mechanical sowing and transplanting, the effects of planting method and seedling number per hill on differentiation and retrogression of branches and spikelets were studied using F you 498 in the field experiments. The results showed that the number of differentiated and survived branches in mechanical direct seeding and mechanical transplanting was significantly higher than that in artificial transplanting, however, the survived spikelets in mechanical direct seeding and mechanical transplanting were significantly lower than those in artificial transplanting. The number of differentiated and survived primary branches and spikelets were higher in mechanical direct seeding than in artificial transplanting, while those in mechanical transplanting were the lowest. The numbers of differentiated and retro- graded secondary branches in mechanical direct seeding and mechanical transplanting were significantly higher than those in arti- ficial transplanting. However, the number of differentiated secondary spikelets was higher in mechanical transplanting than in artificial transplanting, and was the lowest in mechanical direct seeding. The number of differentiated and retrograded primary and secondary branches and spikelets were significantly lower in high seedling number per hill than in low seedling number per hill. The number differences of differentiated and retrograded secondary branches in all of the planting methods presented mainly on the basal panicle, the number of survived secondary branches showed an increased and then decreased tendency on different pri- mary branches, which was mainly related to the serious secondary branches retrogression. The number of survived primary spikelets decreased from panicle bottom to top, the number of survived secondary spikelets was related to the ability of spikelets differentiation. Therefore, for the effect of interaction between planting methods and seedling number per hill, the low seedling
- Published
- 2013