Counter Agronomic Systems and Maize Seed Vigour

J. Pantović, D. Jovičić, S. Lekić, M. Sečanski
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引用次数: 1

Abstract

Summary The quality and provenance of seed are of exceptional importance for the production and yield of cultivated plants. There are numerous tests for determination of seed vigour. The seed accelerated ageing test is one of the most important tests that provide determination of the degree of germination preservation and the seed longevity in storages. The aim of this study was to observe the effect of different production methods – organic and conventional – on seed vigour of maize (variety Rumenka), using the seed accelerated ageing test. Maize seeds were exposed to double stress conditions (temperature of 45 °C, air humidity of 100%) for 72h. Maize seed germination was determined by the standard germination test and was expressed as a percentage. The results of vigour of maize seeds organically produced indicated that the application of the seed accelerated ageing test increased the first count (78.5%) in relation to the standard germination test (70.75%), and a significantly higher percentage of nongerminated seeds (10.25%) were recorded. Furthermore, the radicle length decreased (120.75 mm), while the length of the seedling above-ground part (117.13 mm) and fresh weight (4.56 g) increased. In maize seeds conventionally produced, the first count and germination were higher (41.5% and 46.25%, respectively) after the application of the seed accelerated ageing test, while the percentage of nongerminated seeds were higher (38.75%). In addition, the length (105.88 mm) and fresh weight (4.43 g) of the seedling above-ground part decreased, while the values of the radicle length (137.5 mm), fresh weight (2.39 mm) and dry weight (0.28 mm) as well as dry weight of above-ground parts of seedlings (0.31 g) were higher than after the application of the standard laboratory method (127.88 mm, 1.89 g, 0.17 mm and 0.31 g, respectively).
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反农艺系统与玉米种子活力
种子的质量和来源对栽培植物的生产和产量至关重要。有许多测定种子活力的试验。种子加速老化试验是测定种子发芽保存程度和种子贮藏寿命的重要试验之一。本研究的目的是利用种子加速老化试验,观察不同生产方法(有机和常规)对鲁门卡玉米(品种)种子活力的影响。玉米种子在温度45℃,空气湿度100%的双重胁迫条件下暴露72h。玉米种子发芽率用标准发芽试验测定,并用百分数表示。有机生产的玉米种子活力测定结果表明,采用种子加速老化试验比标准发芽试验(70.75%)提高了第一次萌发率(78.5%),未萌发率(10.25%)显著提高。根长减少(120.75 mm),苗地上部长增加(117.13 mm),鲜重增加(4.56 g)。在常规生产的玉米种子中,施用加速老化试验后的第一次计数和发芽率分别为41.5%和46.25%,未发芽率为38.75%。幼苗地上部长度(105.88 mm)和鲜重(4.43 g)减少,而幼苗地上部根长(137.5 mm)、鲜重(2.39 mm)、干重(0.28 mm)和干重(0.31 g)均高于标准实验室法处理后的127.88 mm、1.89 g、0.17 mm和0.31 g。
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