YANG Qing.Effect of Different Planting Depth on Rice Seedling Morphological Characteristics[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(06):7-10.[doi:10.11942/j.issn1002-2767.2016.06.0007]
不同播种深度对水稻苗期形态特征的影响
- Title:
- Effect of Different Planting Depth on Rice Seedling Morphological Characteristics
- 文章编号:
- 1002-2767（2016）06-0007-04
- 分类号:
- S511
- 文献标志码:
- A
- 摘要:
- 为了发掘优秀的水稻种质资源，在盆栽条件下，以水稻品种龙粳24、龙粳25、龙粳27、龙粳31、龙粳46、龙粳47为试验材料，研究不同播种深度对水稻出苗率的影响及其出苗动力源分析。结果表明：随着播种深度的增加，水稻的出苗率降低；在播种深度为7~9 cm时，龙粳27、龙粳31和龙粳47出苗率较高，出苗动力源分析表明：覆土浅(1 cm)时中胚轴伸长长度对出苗情况起到关键的作用，覆土深（9 cm）时中胚轴和芽鞘节长度与出苗率呈极显著正相关，幼苗第一节伸长长度与出苗率呈显著正相关。
- Abstract:
- In order to explore the outstanding rice germplasm resources，taking rice varieties in Longjing 24,Longjing 25,Longjing 27,Longjing 31,Longjing 46 and Longjing 47 as the experimental materials,the effect of different planting depth on the rice seedling emergence and the power sources of emergence were researched.The results showed that with the increasing of the depth,the germination rate of rice decreased.When sowing depth in 7~9 cm,the rice germination rate of Longjing 27,Longjing 31 and Longjing 47 was higher.The power analysid indicates that mesocotyl elongation length played a key role in the emergence when covering depth 1 cm; when covering depth 9 cm,mesocotyl and coleophyllum section elongation length and the germination rate were significantly related to germination rate.
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备注/Memo
收稿日期：2016-04-25