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当前位置: 首页 > 文章 > Seed priming improves early seedling vigor, growth and productivity of spring maize 农业科学学报 (英文) 2015,14 (9)
Position: Home > Articles > Seed priming improves early seedling vigor, growth and productivity of spring maize Journal of Integrative Agriculture 2015,14 (9)

Seed priming improves early seedling vigor, growth and productivity of spring maize

作  者：
Rehman, Hafeez ur;Iqbal, Hassan;Basra, Shahzad M. A.;Afzal, Han;Farooq, Muhammad;Wakeel, Abdul;Wang Ning
单  位：
Univ Agr Faisalabad, Dept Agron, Faisalabad 38040, Pakistan;Chinese Acad Agr Sci, Agr Informat Inst, Beijing 100081, Peoples R China;Univ Agr Faisalabad, Dept Crop Physiol, Seed Physiol Lab, Faisalabad 38040, Pakistan;Univ Agr Faisalabad, Inst Soil & Environm Sci, Faisalabad 38040, Pakistan
关键词：
low temperature;membrane permeability;organic stimulants;moringa leaf extracts;salicylic acid;leaf area duration;yield
摘  要：
Potential of seed priming treatments in improving the performance of early planted maize was evaluated against timely planting. Seeds of maize hybrid FH-810 were soaked in water (hydropriming), CaCl2 (2.2%, osmopriming), moringa leaf extracts (MLE 3.3%, osmopriming) and salicylic acid (SA, 50 mg L-1, hormonal priming) each for 18 h. Untreated and hydroprimed seeds were taken as control. Seeds primed with SA took less time in emergence and had high vigor in early planted maize. Amongst treatments, hormonal priming, reduced the electrical conductivity, increased the leaf relative and chlorophyll contents followed by osnnopriming with CaCl2 at seedling stage. Likewise, plant height, grain rows and 1000-grain weight, grain and biological yield and harvest index were also improved by seed priming; however hormonal priming and osmopriming with MLE were more effective in this regard. Improved yield performance by hormonal priming or osnnopriming with MLE in early planting primarily owed to increased leaf area index, crop growth and net assimilation rates, and maintenance of green leaf area at maturity. In conclusion, osmopriming with MLE and hormonal priming with SA were the most economical treatments in improving productivity of early planted spring maize through stimulation of early seedling growth at low temperature.
作  者：
Hafeez ur Rehman;Hassan Iqbal;Shahzad M A Basra;Irfan Afzal;Muhammad Farooq;Abdul Wakeel;WANG Ning;Seed Physiology Laboratory,Department of Crop Physiology,University of Agriculture;Department of Agronomy,University of Agriculture;Institute of Soil and Environmental Sciences,University of Agriculture;Agricultural Information Institute,Chinese Academy of Agricultural Sciences;
关键词：
low temperature,membrane permeability,organic stimulants,moringa leaf extracts,salicylic acid,leaf area duration,yield
摘  要：
Potential of seed priming treatments in improving the performance of early planted maize was evaluated against timely planting. Seeds of maize hybrid FH-810 were soaked in water(hydropriming), Ca Cl2(2.2%, osmopriming), moringa leaf extracts(MLE 3.3%, osmopriming) and salicylic acid(SA, 50 mg L–1, hormonal priming) each for 18 h. Untreated and hydroprimed seeds were taken as control. Seeds primed with SA took less time in emergence and had high vigor in early planted maize. Amongst treatments, hormonal priming, reduced the electrical conductivity, increased the leaf relative and chlorophyll contents followed by osmopriming with Ca Cl2 at seedling stage. Likewise, plant height, grain rows and 1 000-grain weight, grain and biological yield and harvest index were also improved by seed priming; however hormonal priming and osmopriming with MLE were more effective in this regard. Improved yield performance by hormonal priming or osmopriming with MLE in early planting primarily owed to increased leaf area index, crop growth and net assimilation rates, and maintenance of green leaf area at maturity. In conclusion, osmopriming with MLE and hormonal priming with SA were the most economical treatments in improving productivity of early planted spring maize through stimulation of early seedling growth at low temperature.

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