苦荞种子活力测定方法与其田间成苗率的相关性  

Relativity analysis between the percentage of seedlings in the field and the methods of seed testing of Tartary buckwheat

作　　者：吕勇 许学微 陈庆富[1] 黄娟 朱丽伟 LV Yong;XU Xuewei;CHEN Qingfu;HUANG Juan;ZHU Liwei(Guizhou Buckwheat Engineering Technology Research Center/School of Life Sciences,Guizhou Normal University,Guiyang,Guizhou 550025,China)

机构地区：[1]贵州师范大学生命科学学院/贵州省荞麦工程技术研究中心,贵州贵阳550025

出　　处：《贵州师范大学学报（自然科学版）》2024年第2期112-117,共6页Journal of Guizhou Normal University：Natural Sciences

基　　金：国家自然科学基金(31760430);现代农业产业技术体系建设专项资金(CARS 07-A5);云南省重大科技专项与重点研发计划(202202AE090020);贵州省科技计划(黔科合平台人才[2017]5726-20)。

摘　　要：为确定与田间成苗率相关性较好的室内苦荞种子活力测定方法,以活力水平不同的4个苦荞品种:六苦1号、品苦1号、黑米15、额曲木耳薏为试验材料。采用标准发芽试验、低温发芽试验和高温发芽试验3种室内发芽方法测定种子活力,并将其结果与田间成苗率进行相关性分析。结果表明标准发芽试验中,苗鲜重和活力指数与四月份田间出苗率表现出显著相关性,低温发芽试验中苗鲜重和活力指数与七月份田间出苗率表现出显著相关性,高温发芽试验中苗鲜重活力指数与四月和七月田间出苗率均表现出显著相关性。高温发芽试验中发芽势、发芽率、苗鲜重、发芽指数、活力指数与七月份田间成苗率均表现出显著相关性,其中发芽势和发芽率与七月份田间成苗率相关系数最高(0.993、0.907)。研究结论:在使用标准发芽试验检测苦荞种子活力时,苗鲜重和活力指数与田间出苗率表现出显著相关性,可作为预测田间成苗率的有效指标,逆境试验中的高温发芽试验结果与田间出苗率表现出显著相关性,可作为预测田间成苗率的有效方法。To select an indoor method for determining the seed vigor of Tartary buckwheat that shows a good correlation with the percentage of field emergence,four Tartary buckwheat varieties with different vigor,Liuku 1,Pinku 1,Heimi 15 and Erqu auricular barley were used as experimental material.Seed vigor was determined by standard germination tests,low temperature germination tests and high temperature germination tests,and the results of the three methods were then correlated with the results of percent field emergence.The results showed that the fresh weight and vigor index in the standard germination test had a significant correlation with field emergence in April.The fresh weight and vigor index of seedlings in the low temperature germination test showed a significant correlation with the field emergence rate in July.In the high temperature germination test,fresh weight and vigor index showed significant correlation with field emergence rate in April and July,germination energy,germination percentage,fresh weight,germination index and vigor index all showed significant correlation with field seedling rate in July.Among them,germination energy and germination percentage had the highest correlation coefficients with field seedling rate in July(0.993,0.907).The conclusion is that the fresh weight and vigor index in the germination test tend to be significantly correlated with the field germination rate and can be used as effective indicators for predicting the field germination rate.The results of the high temperature germination test are more likely to correlate significantly with the emergence rate of seedlings in the field.It can be used as an effective method to predict the seedling emergence rate in the field.

关 键 词：荞麦 种子活力 田间成苗 低温发芽 高温发芽 

分 类 号：S517[农业科学—作物学]