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Physiological and biochemical changes during storage and seed priming in pearl millet

KrishiKosh

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Title Physiological and biochemical changes during storage and seed priming in pearl millet
 
Creator Gupta, Ankush
 
Contributor Punia, R.C
 
Subject Pearl millet, seed quality, germination, cold storage, ambient storage, polysetbin, polythene bag, cloth bag, catalase, peroxidase, dehydrogenase, priming.
 
Description The present investigation was carried out on seeds of 2 pearl millet hybrids viz .,HBB197 and HHB223 along with their parental A, B and R lines viz ., A- ICMA97111 andI CMA94555, B-ICMB97111 and ICMB94555, R- HBL-11 with the objectives to study the physiological and biochemical changes associated with seed deterioration, to study the effect of different containers and storage conditions on seed quality and to study the effect of various seed priming treatments on seed quality. In the first experiment seven genotypes with 8% moisture content were packed in poly set bin, polythene bag and cloth bag and stored under ambient and cold storage condition (20C). Among the storage condition and packaging material tested,the seeds preserved under cold storage and packed in polyset bin and polythene bag recorded higher germination, seedling vigour index,seedling dry weight,seedling establishment and other quality parameters with less qualitative loss in comparison to those seeds stored underambient condition through out the storage period of 24 month , Activity of all the anti-ox idant enzymes viz. , peroxidase , catalase and dehydrogenase activity decreased while EG and FFA increased with storage period butminimum deterioration was occurin the seeds preserved in polyset binand polythene bagunder cold storage condition . Vigour of all the genotypes also decreasedwith storagepriod. Among all the, genotypes HHB197 was observed highly vigorous and proved goodstorer .The interaction effect of genotype HHB197 packed in vapour proofcontainer ( polysetbin and polythene bag ) and stored under cold storage is proved to be better in maintaining the seed quality of pearl millet for long rperiod.
. In the 2nd experiment, an effort had been made to improve the seed quality with various seed priming treatments (control ,water,GA3 , KNO3 , KH2PO4, thiram andvita vax +cruzer.). Am ong various priming treatments hydration with GA3 (50 ppm)
was foundsuperior for enhancing seed quality in all the seven genot ypes of pearl millet followed by,25 mg vitavax +25 mg cruzer tr eatment . The maximum enhancement in germination was observed in fresh lot as compare to one year old seed lot by different priming treatment sand among genotypes, maximum enhancement was observed in genotype HHB223 and minimum in ICMB9 7111.
 
Date 2016-07-23T08:15:30Z
2016-07-23T08:15:30Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69444
 
Language en
 
Format application/pdf
 
Publisher CCSHAU