Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)

Research on accelerated aging effects on seed vigour and plant performances in mungbean (Vigna radiata L.) was undertaken at Universiti Malaysia Sabah, Sandakan Campus. The research was divided into four studies: Study I: Evaluation of Initial Mungbean Seed Quality, Study II: Effect of Accelerated A...

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Main Author:	Chan, Su Yi
Format:	Thesis
Language:	English English
Published:	2020
Subjects:	QK640-(707) Plant anatomy
Online Access:	https://eprints.ums.edu.my/id/eprint/41207/1/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/41207/2/FULLTEXT.pdf
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spelling	my-ums-ep.412072024-10-14T03:21:35Z Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.) 2020 Chan, Su Yi QK640-(707) Plant anatomy Research on accelerated aging effects on seed vigour and plant performances in mungbean (Vigna radiata L.) was undertaken at Universiti Malaysia Sabah, Sandakan Campus. The research was divided into four studies: Study I: Evaluation of Initial Mungbean Seed Quality, Study II: Effect of Accelerated Aging on Mungbean Seed Quality, Study III: Effect of Seed Vigour on Mungbean Growth and Yield Traits, and Study IV: Relationship Between Quality Traits and Field Performance in Mungbean Seeds of Different Vigour. The initial standard germination and seedling vigour index of those seeds were recorded as 95 % and 19.68, respectively. This indicated that those seeds were highly viable and vigorous. The seeds were then subjected to accelerated aging treatments in order to obtain seedlots of varying vigour levels. They were exposed to high temperatures (41, 43 and 45oC), high relative humidity (≈95%) for 48 and 96 hours. The aging treatments were found to have significantly deleterious effects on mungbean seed quality. The extent of deterioration corresponded linearly with temperature and duration of aging. The higher the temperature and the longer the aging duration, the more severe was the damage. The resultant seedlots ranged in germination percentage from 95 % (for non-aged seeds) to 59.5 % (for those aged at 45oC for 96 hours) and their corresponding vigour indices dropped from 19.68 to 5.73. The different vigour seedlots obtained were evaluated for quality attributes in the laboratory as well as in the field. Quality traits evaluated in the laboratory included seed moisture content, seed leachate conductivity, germination percentage, germination index, seedling vigour index, length, fresh weight and dry weight of radicle and plumule. Laboratory evaluations revealed that all the seed quality attributes corresponded directly with their respective vigour levels, with the differences being significant. Tetrazolium test was rather hard to distinctly separate the variations in germination potential among the seedlots. Field evaluations included days to first emergence, field emergence percentage, plant height, days to first flowering, number of fruit clusters per plant, single pod length and weight, number of seeds per pod, 100-seed weight and seed yield per plant. Data revealed that all the yield components were significantly influenced by seed vigour, except days to first emergence, plant height and days to first flowering. Plants derived from the highest vigour seeds produced a seed yield of 35.37 g per plant while the lowest vigour seeds only produced 7.83 g of seed yield per plant. These findings proved that there was a relationship between quality traits and mungbean plant performances. Correlation of seed vigour and field performance become more remarkable as the differences in seed quality increase. Both laboratory and field experiments demonstrated that high vigour seeds outperformed low vigour seeds in almost all traits evaluated. Therefore, it is concluded that planting high vigour seeds can help to ensure success in crop establishment and productivity. 2020 Thesis https://eprints.ums.edu.my/id/eprint/41207/ https://eprints.ums.edu.my/id/eprint/41207/1/24%20PAGES.pdf text en public https://eprints.ums.edu.my/id/eprint/41207/2/FULLTEXT.pdf text en validuser masters Universiti Malaysia Sabah Faculty Of Sustainable Agriculture
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English English
topic	QK640-(707) Plant anatomy
spellingShingle	QK640-(707) Plant anatomy Chan, Su Yi Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
description	Research on accelerated aging effects on seed vigour and plant performances in mungbean (Vigna radiata L.) was undertaken at Universiti Malaysia Sabah, Sandakan Campus. The research was divided into four studies: Study I: Evaluation of Initial Mungbean Seed Quality, Study II: Effect of Accelerated Aging on Mungbean Seed Quality, Study III: Effect of Seed Vigour on Mungbean Growth and Yield Traits, and Study IV: Relationship Between Quality Traits and Field Performance in Mungbean Seeds of Different Vigour. The initial standard germination and seedling vigour index of those seeds were recorded as 95 % and 19.68, respectively. This indicated that those seeds were highly viable and vigorous. The seeds were then subjected to accelerated aging treatments in order to obtain seedlots of varying vigour levels. They were exposed to high temperatures (41, 43 and 45oC), high relative humidity (≈95%) for 48 and 96 hours. The aging treatments were found to have significantly deleterious effects on mungbean seed quality. The extent of deterioration corresponded linearly with temperature and duration of aging. The higher the temperature and the longer the aging duration, the more severe was the damage. The resultant seedlots ranged in germination percentage from 95 % (for non-aged seeds) to 59.5 % (for those aged at 45oC for 96 hours) and their corresponding vigour indices dropped from 19.68 to 5.73. The different vigour seedlots obtained were evaluated for quality attributes in the laboratory as well as in the field. Quality traits evaluated in the laboratory included seed moisture content, seed leachate conductivity, germination percentage, germination index, seedling vigour index, length, fresh weight and dry weight of radicle and plumule. Laboratory evaluations revealed that all the seed quality attributes corresponded directly with their respective vigour levels, with the differences being significant. Tetrazolium test was rather hard to distinctly separate the variations in germination potential among the seedlots. Field evaluations included days to first emergence, field emergence percentage, plant height, days to first flowering, number of fruit clusters per plant, single pod length and weight, number of seeds per pod, 100-seed weight and seed yield per plant. Data revealed that all the yield components were significantly influenced by seed vigour, except days to first emergence, plant height and days to first flowering. Plants derived from the highest vigour seeds produced a seed yield of 35.37 g per plant while the lowest vigour seeds only produced 7.83 g of seed yield per plant. These findings proved that there was a relationship between quality traits and mungbean plant performances. Correlation of seed vigour and field performance become more remarkable as the differences in seed quality increase. Both laboratory and field experiments demonstrated that high vigour seeds outperformed low vigour seeds in almost all traits evaluated. Therefore, it is concluded that planting high vigour seeds can help to ensure success in crop establishment and productivity.
format	Thesis
qualification_level	Master's degree
author	Chan, Su Yi
author_facet	Chan, Su Yi
author_sort	Chan, Su Yi
title	Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
title_short	Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
title_full	Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
title_fullStr	Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
title_full_unstemmed	Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
title_sort	accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)
granting_institution	Universiti Malaysia Sabah
granting_department	Faculty Of Sustainable Agriculture
publishDate	2020
url	https://eprints.ums.edu.my/id/eprint/41207/1/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/41207/2/FULLTEXT.pdf
_version_	1818611379502841856

Accelerated aging effects on seed vigour and plant performances in mungbean (vigna radiata l.)

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