Evaluation of growth parameters and yield attributes of marigold genotypes under humid tropical plains
Abstract
The study was conducted at department of Floriculture & Landscape Architecture, College of Agriculture, Vellanikkara, Kerala Agricultural University, Thrissur, to evaluate 20 marigold genotypes with 12 testers (10 African marigold (Tagetes erecta) and 2 French marigold (Tagetes patula) genotypes) and 8 lines for the production of F1 hybrids, during 2019-20 and 2020-21. Pooled data analysis of vegetative parameters showed the superiority of tester genotype KAU-M 21 in terms of plant height (43.77 cm), plant spread (31.97 cm), number of primary branches (7.87) and stem girth (4.12 cm), while KAU-M 1 showed the superiority in total leaf area (47.27 cm2 ). Among the lines, KAU-M 42 showed good performance for all the vegetative parameters. Analytical study on floral characters highlighted that the testers, KAU-M 1 and KAU-M 40, produced larger flowers (6.3 cm and 5.80 cm diameter) having significantly more individual flower weight (9.70 g and 7.85 g) and ray floret weight (5.60 g and 3.50 g) respectively. French marigold genotypes KAUM 48 and KAU-M 47 showed earliest bud initiation (17.92 and 19.37 days) and earlier flower opening (35 and 37.75 days). KAU-M 46 produced maximum number of flowers per plant (103.37), while KAU-M 2, KAU-M 1, KAU-M 19 and KAU-M 40 recorded maximum yield that ranged from 215 to 243 g/plant. Among the lines, KAU-M 6 recorded highest number of flowers and yield per plant (92.32 and 228.99 g) followed by KAU-M 5, KAU-M 16 and KAU-M 42. Among the testers, shelf life of flowers differed significantly and majority of the genotypes recorded a shelf life ranging from 2.0 to 2.67 days. The total carotenoid content was significantly higher in KAU-M 47 and KAU-M 48 (4.85 and 2.26 mg/g respectively) among the testers, and KAU-M 18 and KAU-M 42 (2.01 mg/g and 1.49 mg/g respectively) among the lines. KAU-M 1 and KAU-M 5 recorded the highest lutein content (102.3 mg/g and 62.3 mg/g) among the testers and lines, respectively.Downloads
Published
How to Cite
Issue
Section
License
Copyright © 2001-11 Kerala Agricultural University. Some rights reserved. This journal and the individual contributions contained in it are protected under copyright by the Kerala Agricultural University and the following terms and conditions apply to their use; Photocopying Single photocopies of single articles may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Permission may be sought directly from the Editor, Journal of Tropical Agriculture, Department of Agronomy, College of Horticulture,, Kerala Agricultural University, KAU PO, Thrissur 680 656, Kerala, India. (Phone: +91-487-2438325; Fax +91-487-2371040; E-mail: editor.jta@kau.in. Derivative works Subscribers may reproduce tables of contents or prepare lists of articles including abstracts for internal circulation within their institution. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations. Notice No responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products, liability, negligence, or otherwise, or from any use of any methods, products, instructions or ideas contained in the material herein.