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Effects of NaCl salinity on maize (Zea mays L.) at germination and early seedling stage

机译:NaCl盐分对玉米萌发和幼苗早期的影响

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The response of eight maize hybrids against five different salinity levels namely 0, 60, 120, 180 and 240 mM) were studied at germination and early seedling stage. This investigation was performed as factorial experiment under completely randomized design (CRD) with three replications for each salinity level. Analysis of variance (ANOVA) showed that there were significant differences (P < 0.05) between salinity stress levels, hybrids and interaction effects for all investigated traits. Supplementary analysis showed that there were?significant differences (P < 0.05)?between hybrids for germination percentage, germination rate, mean germination time and seed vigor in all salinity levels. But, there were no significant differences found between studied hybrids at salinity level of 240 mM for the length of radicle, the length of plumule and the length of whole seedling. Results also indicated that maximum reduction in germination percentage (77.4%), germination rate (32.4%), length of radicle (79.5%) and plumule (78%), seedling length (78.1%) and seed vigor (95%) were obtained in highest level of salinity (240 mM). Results further depicted that hybrid K166B×K47/2-2-21-2-1-1-1 was the most tolerant hybrid than other hybrids under salinity stress.
机译:研究了八种玉米杂交种在发芽和幼苗早期对五个不同盐度水平(0、60、120、180和240 mM)的响应。这项研究是作为完全随机设计(CRD)下的析因实验进行的,每个盐度水平重复三次。方差分析(ANOVA)表明,所有研究性状的盐分胁迫水平,杂种优势和相互作用效应之间存在显着差异(P <0.05)。补充分析表明,在所有盐度水平下,杂种的发芽率,发芽率,平均发芽时间和种子活力均存在显着差异(P <0.05)。但是,在盐度为240 mM的杂交种之间,胚根的长度,胚芽的长度和整个幼苗的长度没有显着差异。结果还表明最大程度的降低了发芽率(77.4%),发芽率(32.4%),胚根长度(79.5%)和胚芽(78%),幼苗长度(78.1%)和种子活力(95%)。盐度最高(240 mM)。结果进一步表明,在盐分胁迫下,杂种K166B×K47 / 2-2-21-2-1-1-1比其他杂种耐受性最高。

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