Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)

Chilli is one of the most important commercial vegetable in Malaysia which consumption per capita ranged from 1.3 kilograms to 2.2 kilograms per year. One of the problems in chilli production namely Kulai variety is low harvesting volume per harvesting visit. Thus, the objectives of this study are (...

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Main Author:	Lydianie Wesley
Format:	Thesis
Language:	English English
Published:	2017
Subjects:	SB320-353.5 Vegetables
Online Access:	https://eprints.ums.edu.my/id/eprint/38511/1/FULLTEXT.pdf https://eprints.ums.edu.my/id/eprint/38511/2/ABSTRACT.pdf
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spelling	my-ums-ep.385112024-04-23T06:51:25Z Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai) 2017 Lydianie Wesley SB320-353.5 Vegetables Chilli is one of the most important commercial vegetable in Malaysia which consumption per capita ranged from 1.3 kilograms to 2.2 kilograms per year. One of the problems in chilli production namely Kulai variety is low harvesting volume per harvesting visit. Thus, the objectives of this study are (1) to investigate reproductive characteristics of chilli as indicator for harvesting schedule, (2) to determine the effect of selected pre-harvest treatments (Naphtalene acetic acid (NAA), Gibberellic acid (GA3), and Indole acetic acid (IAA)) at different levels on plant growth, fruit yield, and quality attributes of chilli and (3) to determine the effect of Naphtalene acetic acid (at 40ppm) as post-harvest treatment on quality attributes of chilli during storage. For objective number one and two, Kulai chilli plants were planted using seven treatments (Ti-Control, TrNAA 20 ppm, T3-NAA 40 ppm, T4-GA3 10 ppm, Ts- GA3 20 ppm, T5-IAA 25 ppm, T,- IAA 50 ppm) with 5 replications. Chilli height with GA3 20ppm application is significantly higher than the other treatments from 30 to 90 days after transplanting. Chilli treated with IAA S0ppm and NAA 40ppm showed significant earliness in days to chilli fruit maturity (index 1-index 5). Fresh weight of chilli treated with NAA 40ppm and GA3 l0ppm are significantly higher than other treatments. For number of seeds per fruit, chilli treated with NAA 20 ppm, NAA 40ppm and GA3 10 ppm showed no significant different. Fruit length, capsaicin content, vitamin C content and yield per plant with NAA 40ppm application is significantly higher compared to other treatments. However, treatments with IAA S0ppm showed significant earliness in days of first flowering. Based on data collected from pre-harvest studies, the best plant growth regulator treatment (NAA 40ppm) was selected for post-harvest studies. Postharvest treatments- include three packaging methods (non-perforated polythene, perforated polythene, and open trays as control), three storage temperatures (room temperature, refrigerated condition at s0c and 10°C) and three storage duration (3, 6, 12 days) with four replications were performed. Percentage of weight loss, firmness, color, fruit rotting, capsaicin content and vitamin c content of the chilli fruit were recorded. Chilli packed in non-perforated polythene at 5°C resulted in lowest percentage of weight loss and decay, firmness and green color of the fruits were retained and significantly higher capsaicin and vitamin C content compared to other treatment combination. Thus, this study recommend harvested Kulai chilli to be packed using non-perforated polythene and store at 5°C to maintain the postharvest qualities. 2017 Thesis https://eprints.ums.edu.my/id/eprint/38511/ https://eprints.ums.edu.my/id/eprint/38511/1/FULLTEXT.pdf text en validuser https://eprints.ums.edu.my/id/eprint/38511/2/ABSTRACT.pdf text en public masters Universiti Malaysia Sabah Fakulti Pertanian Lestari
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English English
topic	SB320-353.5 Vegetables
spellingShingle	SB320-353.5 Vegetables Lydianie Wesley Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)
description	Chilli is one of the most important commercial vegetable in Malaysia which consumption per capita ranged from 1.3 kilograms to 2.2 kilograms per year. One of the problems in chilli production namely Kulai variety is low harvesting volume per harvesting visit. Thus, the objectives of this study are (1) to investigate reproductive characteristics of chilli as indicator for harvesting schedule, (2) to determine the effect of selected pre-harvest treatments (Naphtalene acetic acid (NAA), Gibberellic acid (GA3), and Indole acetic acid (IAA)) at different levels on plant growth, fruit yield, and quality attributes of chilli and (3) to determine the effect of Naphtalene acetic acid (at 40ppm) as post-harvest treatment on quality attributes of chilli during storage. For objective number one and two, Kulai chilli plants were planted using seven treatments (Ti-Control, TrNAA 20 ppm, T3-NAA 40 ppm, T4-GA3 10 ppm, Ts- GA3 20 ppm, T5-IAA 25 ppm, T,- IAA 50 ppm) with 5 replications. Chilli height with GA3 20ppm application is significantly higher than the other treatments from 30 to 90 days after transplanting. Chilli treated with IAA S0ppm and NAA 40ppm showed significant earliness in days to chilli fruit maturity (index 1-index 5). Fresh weight of chilli treated with NAA 40ppm and GA3 l0ppm are significantly higher than other treatments. For number of seeds per fruit, chilli treated with NAA 20 ppm, NAA 40ppm and GA3 10 ppm showed no significant different. Fruit length, capsaicin content, vitamin C content and yield per plant with NAA 40ppm application is significantly higher compared to other treatments. However, treatments with IAA S0ppm showed significant earliness in days of first flowering. Based on data collected from pre-harvest studies, the best plant growth regulator treatment (NAA 40ppm) was selected for post-harvest studies. Postharvest treatments- include three packaging methods (non-perforated polythene, perforated polythene, and open trays as control), three storage temperatures (room temperature, refrigerated condition at s0c and 10°C) and three storage duration (3, 6, 12 days) with four replications were performed. Percentage of weight loss, firmness, color, fruit rotting, capsaicin content and vitamin c content of the chilli fruit were recorded. Chilli packed in non-perforated polythene at 5°C resulted in lowest percentage of weight loss and decay, firmness and green color of the fruits were retained and significantly higher capsaicin and vitamin C content compared to other treatment combination. Thus, this study recommend harvested Kulai chilli to be packed using non-perforated polythene and store at 5°C to maintain the postharvest qualities.
format	Thesis
qualification_level	Master's degree
author	Lydianie Wesley
author_facet	Lydianie Wesley
author_sort	Lydianie Wesley
title	Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)
title_short	Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)
title_full	Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)
title_fullStr	Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)
title_full_unstemmed	Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)
title_sort	effect of pre and postharvest plant growth regulator treatments on yield and quality of kulai chilli ( capsicum annuum var kulai)
granting_institution	Universiti Malaysia Sabah
granting_department	Fakulti Pertanian Lestari
publishDate	2017
url	https://eprints.ums.edu.my/id/eprint/38511/1/FULLTEXT.pdf https://eprints.ums.edu.my/id/eprint/38511/2/ABSTRACT.pdf
_version_	1804890319846637568

Effect of pre and postharvest plant growth regulator treatments on yield and quality of Kulai Chilli ( Capsicum annuum var Kulai)

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