Relationship Between Electrical Conductivity of Seed Soaking Solution and Seed Vigor in Rice （Oryza sativa L.）

doi:10.13304/j.nykjdb.2021.0552

Abstract

Abstract:

To evaluate the relationship of electrical conductivity （EC） and seed vigor， 23 representative rice varieties were artificially aged at 40 ℃ and 85% relative humidity for 0， 14， 28， 42 and 56 d， respectively， which generated seed samples with an extensive range of vigor level. The relationship between electrical conductivity and seed vigor were analyzed. The results showed that EC of seeds with hull were higher than those of seeds without hull. Compared with the EC of seeds with hull， the EC of seed without hull had a higher correlation with germination rate， germination energy and germination index. However， there was no significant regression relationship between the EC of seed without hull and germination rate， germination energy， germination index， which R² were 0.045 2， 0.026 3 and 0.036 7， respectively. The seed vigor of rice could not be predicted by regression equation of seed vigor with the EC.

Key words: rice （Oryza sativa L.）, electrical conductivity, seed vigor, germination rate, germination energy, germination index

摘要：

为明确电导率与种子活力的关系，快速预测种子活力，以23个具有代表性的水稻品种为材料，在40 ℃、85%相对湿度条件下，分别老化0、14、28、42、56 d，共115个种子样本，形成了宽广的种子活力水平范围，研究电导率与种子活力之间的关系。结果表明，种子（带壳）浸泡液电导率大于糙米（去壳）浸泡液电导率。与种子浸泡液电导率相比，糙米浸泡液电导率与发芽率、发芽势和发芽指数间的关系更密切。然而，糙米浸泡液电导率与发芽率、发芽势和发芽指数间没有明显的函数关系，其线性回归模型R²分别为0.045 2、0.026 3、0.036 7，不宜用来预测种子活力。

关键词: 水稻, 电导率, 种子活力, 发芽率, 发芽势, 发芽指数

CLC Number:

S330.2

Zompur CHU, Guangfeng MAO, Min WU, Hongkai WU. Relationship Between Electrical Conductivity of Seed Soaking Solution and Seed Vigor in Rice （Oryza sativa L.）[J]. Journal of Agricultural Science and Technology, 2023, 25(1): 35-41.

曲宗普尺, 毛光锋, 吴敏, 吴洪恺. 水稻种子浸泡液电导率与种子活力的关系[J]. 中国农业科技导报, 2023, 25(1): 35-41.

Figures/Tables 5

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性状 Trait	变幅 Range	平均值 Mean	标准差 Standard deviation
种子电导率 Electrical conductivity of seed with hull/（μS·cm^-1·g^-1）	8.25~51.98	22.10	9.43
糙米电导率 Electrical conductivity of seed without hull/（μS·cm^-1·g^-1）	9.15~34.61	15.55	10.47
发芽率Germination rate/%	0.00~98.00	39.67	36.97
发芽势Germination energy%	0.00~96.00	35.56	36.38
发芽指数Germination index	0.00~40.65	11.33	12.02

性状 Trait	变幅 Range	平均值 Mean	标准差 Standard deviation
种子电导率 Electrical conductivity of seed with hull/（μS·cm^-1·g^-1）	8.25~51.98	22.10	9.43
糙米电导率 Electrical conductivity of seed without hull/（μS·cm^-1·g^-1）	9.15~34.61	15.55	10.47
发芽率Germination rate/%	0.00~98.00	39.67	36.97
发芽势Germination energy%	0.00~96.00	35.56	36.38
发芽指数Germination index	0.00~40.65	11.33	12.02

性状Trait	类型 Type	n	变幅 Range	平均值 Mean	标准差 Standard deviation
种子电导率 Electrical conductivity of seed with hull/（μS·cm^-1·g^-1）	第1类Type 1	38	8.25~40.93	23.13^ns	9.09
	第2类Type 2	54	8.54~46.40	21.09^ns	9.37
	第3类Type 3	23	11.07~51.98	22.74^ns	10.28
糙米电导率 Electrical conductivity of seed without hull/（μS·cm^-1·g^-1）	第1类Type 1	26	14.58~31075	21.43^ns	4.71
	第2类Type 2	41	9.88~34.61	21.11^ns	7.39
	第3类Type 3	20	9.15~30.63	18.26^ns	5.91

性状Trait	类型 Type	n	变幅 Range	平均值 Mean	标准差 Standard deviation
种子电导率 Electrical conductivity of seed with hull/（μS·cm^-1·g^-1）	第1类Type 1	38	8.25~40.93	23.13^ns	9.09
	第2类Type 2	54	8.54~46.40	21.09^ns	9.37
	第3类Type 3	23	11.07~51.98	22.74^ns	10.28
糙米电导率 Electrical conductivity of seed without hull/（μS·cm^-1·g^-1）	第1类Type 1	26	14.58~31075	21.43^ns	4.71
	第2类Type 2	41	9.88~34.61	21.11^ns	7.39
	第3类Type 3	20	9.15~30.63	18.26^ns	5.91

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