Isiaka Kareem, Mohd Razi Ismail, Adam Puteh Mahamoud Abdillahi Rabileh, Saliu
Adeyemi Kareem, Alasinrin Sikiru Yusuf


Improvement in the yield of rice is a pre-requisite to having selfsufficiency in rice production which has not yet been achieved with pre-germination technology. This study was, therefore, conducted to determine the efficacy of seed priming over pre-germination treatment in improving rice yield. Seed priming with 100mM calcium chloride, 40% (w/v) polyethyl glycol 6000 (PEG6000) and 100ppm kinetin were tested against pre-germination. The experimental design used was randomized complete block design (RCBD) with three replications. The plants were assessed using leaf area index (LAI), absolute growth rate (AGR), relative growth rate (RGR), crop growth rate (CGR), net assimilation rate (NAR), leaf area duration (LAD), plant height, number of tillers, productive tillers, rate of photosynthesis, stomatal conductance, intercellular carbon dioxide, transpiration rate, spikelets per panicle, number of filled spikelets, 100-grain weight, grain yield, harvest index and days to heading. It was found that kinetin priming was 18.24%, 10.32% and 28.31% better in number of spikelets per panicle, grain yield and harvest index respectively than pre-germination that was used as the check. This finding implies that 100ppm kinetin priming could be effectively used for better yield improvement of MR219 rice under optimum conditions and can successfully replace pre-germination with better yield. Read full PDF

Keywords: seed priming, classical growth, gas exchange characteristics, yield, yield attributes


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