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本研究的目的是探究新老小麦品种的多种种子质量测试与田间出苗率的关系。在2003～2004年间,西北边境省巴基斯坦的白沙瓦农业大学以4个小麦品种的32个样本为研究对象,通过实验室和田间试验研究了其对多种实验室活力测试的适应性,并对其商业种子批质量进行等级区分,同时预测了育苗场的出苗情况。2003～2004年间,在巴基斯坦西北边境省的8个不同地点种植了4个小麦品种,即Takbeer 2000、Haider2000、Bakhttawar-92及Fakhri Sarhad。在制定标准发芽率和其它活力测试之前对成熟的种子进行了收割、脱粒和除杂。结果显示:对于所有的测试,发芽指数、人工老化以及电导率在种子批质量等级区分和预测田间出苗率两个方面为4个小麦品种的种子活力提供了最好的评价指标。经过两年的研究,通过测定实验材料的根长,结果显示,对于4个小麦品种,发芽指数、人工老化及电导率比测定标准发芽率更能表明种子批质量和预测种子田间出苗率。电导率的测试结果不仅与田间出苗率有很大关系,而且与4个品种大范围种子批的标准发芽率有关,不过这些关系对于4个不同的品种有不同的可行性。标准发芽率的初始计数通常比其它的活力测试更不可靠。从本研究及先前有关小麦作物的研究得出:在世界温带地区对小麦作物进行发芽指数、人工老化及电导率测试来提高活力测试还有待开发的潜力,进行活力测试可以区分种子批质量等级和预测种子性能。
The purpose of this study was to explore the relationship between the seed quality testing of new and old wheat varieties and the germination rate in the field. In 2003-2004, 32 samples of 4 wheat cultivars from Pak Sha Wan Agricultural University in Northwest Frontier Province of Pakistan were selected as research objects. Their adaptability to various laboratory tests was studied through laboratory and field experiments. The quality of its commercial seed lot grading, at the same time predict the seedling nursery emergence. Between 2003 and 2004, four wheat cultivars, Takbeer 2000, Haider 2000, Bakhttawar-92 and Fakhri Sarhad, were planted in eight different locations in the Northwest Frontier Province of Pakistan. Mature seeds were harvested, threshed, and purged prior to establishing standard germination rates and other vigor tests. The results showed that for all the tests, germination index, artificial aging and conductivity provided the best evaluation index for the seed vigor of four wheat cultivars in terms of seed weight grade classification and predictive field emergence rate. After two years of research, by measuring the root length of the experimental material, the results showed that germination index, artificial aging and conductivity were better than the standard germination rate for 4 wheat varieties to better indicate the seed quality and seedling emergence rate. Conductivity test results not only have a great relationship with the emergence rate of the field, but also with the four varieties of standard seed germination of a large number of germination rate, but these relationships for four different varieties have different feasibility. The initial count of standard germination rates is usually less reliable than the other vitality tests. From this study and previous studies on wheat crops, it has been concluded that there is still potential to be developed for testing germination index, artificial aging, and conductivity testing of wheat crops in temperate regions of the world. Viability testing can distinguish seed quality classes and Predict seed performance.