Comparison of seed germination and vigour in low and high phytic acid maize synthetic populations and commercially available hybrids

IF 1.1 Q3 AGRONOMY

South African Journal of Plant and Soil Pub Date : 2021-08-08 DOI:10.1080/02571862.2021.1907465

Mohammed A Elgorashi Bakhite, N. Sithole, L. S. Magwaza, A. Odindo, J. Derera

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Abstract

Plant breeders have focused on reducing phytic acid in maize seeds to improve grain nutritional quality. However, this could have negative effects on seed quality. The objective of this study was to compare seed performance of low and high phytic acid (LPA and HPA) synthetic populations of tropical origin with two hybrid varieties (SC701 and LS8520). Four replicates of 20 seeds per variety were germinated in a randomized complete block design for a standard germination test. Seeds were also subjected to an accelerated ageing (AA) test. The results of the final seed germination percentage were as follows: HPA (98.0%) > SC701 (93.0%) > LPA (90.0%) > LS8520 (85.0%). However, statistically, HPA seeds were similar (p > 0.05) to SC701 seeds and LPA seeds were similar (p > 0.05) to SC701 seeds. The mean germination time (MGT) was similar for all varieties, however, the germination velocity index (GVI) was highest (p < 0.05) for SC701 and similar (p > 0.05) in LPA and HPA. Both SC701 and HPA showed higher percentages germination when they were exposed to the AA test. It was concluded that the LPA population had similar seed quality parameters to high performing varieties.

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低、高植酸玉米合成群体和市售杂交种种子萌发和活力的比较

植物育种家一直致力于减少玉米种子中的植酸，以提高粮食营养质量。然而，这可能会对种子质量产生负面影响。本研究的目的是比较热带来源的低、高植酸（LPA和HPA）合成群体与两个杂交品种（SC701和LS8520）的种子性能。每个品种20个种子的四个重复品在标准发芽试验的随机完全块设计中发芽。还对种子进行加速老化（AA）测试。最终种子发芽率的结果为：HPA（98.0%）>SC701（93.0%）>LPA（90.0%）>LS8520（85.0%）。但从统计学上看，HPA种子与SC701种子相似（p>0.05），LPA种子与SC701种子相似（p>0.05）。所有品种的平均发芽时间（MGT）相似，但SC701的发芽速度指数（GVI）最高（p<0.05），LPA和HPA的发芽速度指标相似（p>0.05）。SC701和HPA在AA试验中均表现出较高的发芽率。结果表明，LPA群体具有与高效品种相似的种子质量参数。

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来源期刊

South African Journal of Plant and Soil Agricultural and Biological Sciences-Plant Science

CiteScore

1.90

自引率

11.10%

发文量

期刊介绍： The Journal has a proud history of publishing quality papers in the fields of applied plant and soil sciences and has, since its inception, recorded a vast body of scientific information with particular reference to South Africa.