Dr. G. U. KulkarniVaghasiya khushbuben parsotambhai2021-07-032021-07-032019-07https://krishikosh.egranth.ac.in/handle/1/5810170055The study entitled “Effect of fruit position and fruit retention load on seed yield and seed quality parameters in okra [Abelmoschus esculentus (L.) Moench]” was carried out during summer 2018 at the Sagdividi Farm, Department of Seed Science and Technology, College of Agriculture, Junagadh Agricultural University, Junagadh. The experiment comprised of three factors, first factor okra varieties, i.e GJO-3 and GAO-5, Second factor fruit retention load, i.e. retention of fruits borne on different nodes for seed purpose and retaining all fruits and third factor collection of seeds from different fruit position, fruits borne on 1-3 nodes (C1), fruits borne on 4-8 nodes (C2), fruits borne on above 8th node (C3), fruits borne on 1-8 nodes (C4), fruits borne on 1-3 nodes and above 8th node (C5), fruits borne above 4th nodes (C6) and all fruits (C7). The characters viz., field emergence (%), days to flower initiation, plant height at 30 DAS (cm), plant height at final harvest (cm), fruit length (cm), number of seeds per fruit, hundred seed weight (g) and seed yield per plant (g) were recorded in the field and were analyzed using Randomized Block Design (Factorial) with three replications as per Cochran and Cox (1957). The laboratory observation on seed quality parameters under the study were measured in the laboratory of Department of Seed Science and Technology, College of Agriculture, Junagadh Agricultural University, Junagadh. The characters viz., seed germination (%), root length (cm), shoot length (cm), seedling length (cm), seedling fresh weight (g), seedling dry weight (g), seedling vigour index-I, seedling vigour index-II and seed moisture content (%), were analyzed by Completely Randomized Design (Factorial) as per the method suggested by Cochran and Cox (1957). The varietal influence has been seen on yield and related traits. Variety GAO-5 was recorded higher value for plant height at final harvest and fruit length while variety GJO-3 scored comparatively higher values for days to flower initiation, plant height at 30 DAS, number of seeds per fruit, hundred seed weight and seed yield per plant. In laboratory conditions significantly highest seed germination, root length, shoot length, seedling length, seedling fresh weight, seedling dry weight, seedling vigour index-I and seedling vigour index-II were recorded in variety GJO-3. Fruit retention was found significantly maximum and minimum plant height at final harvest, fruit length, number of seeds per fruit, hundred seed weight and seed yield per plant were recorded in retention of fruits borne on different nodes for seed purpose and retaining all fruits, respectively. In laboratory conditions, retention of fruits borne on different nodes for seed purpose recorded significantly higher seed germination, root length, shoot length, seedling length, seedling fresh weight, seedling dry weight, seedling vigour index-I and seedling vigour index-II compared to the retaining all fruits. Collection of seeds from fruits borne on 1-3 nodes was recorded significantly maximum fruit length, number of seeds per fruit and hundred seed weight followed by collection of seeds from fruits borne on 4-8 nodes and collection of seeds from fruits borne on 1-8 nodes. While, significantly lowest fruit length was observed in collection of seeds from all fruits. Collection of seeds from fruits borne above 8th node was recorded significantly minimum number of seeds per fruit and hundred seed weight. The maximum plant height at final harvest was recorded in collection of seeds from fruits borne on 1-3 nodes and above 8th node followed by collection of seeds from fruits borne on above 8th nodes, collection of seeds from fruits borne on 1-3 nodes and collection of seeds from fruits borne on 1-8 nodes which were all at par with collection of seeds from fruits borne on 1-3 nodes and above 8th node. Significantly minimum plant height at final harvest was recorded in fruit position collection of seeds from fruits borne on above 4th nodes. Collection of seeds from all fruits recorded significantly highest seed yield per plant followed by collection of seeds from fruits borne on 1-8 nodes and collection of seeds from fruits borne on above 4th nodes. While, collection of seeds from fruits borne above 8th node recorded significantly the lowest seed yield per plant. In laboratory conditions, collection of seeds from fruits borne on 1-3 nodes recorded significantly maximum seed germination percentage, root length, shoot length, seedling length, seedling fresh weight, seedling dry weight, seedling vigour index-I and seedling vigour index-II followed by collection of seeds from fruits borne on 4-8 nodes and collection of seeds from fruits borne on 1-8 nodes. While, collection of seeds from fruits borne above 8th node recorded significantly lower seed germination percentage, root length, shoot length, seedling length, seedling fresh weight, seedling dry weight, seedling vigour index-I and seedling vigour index-II. All the interactions i.e. Interaction effect varieties (V) x fruit retention (H), Interaction effect varieties (V) x collection of seeds from different fruit positions (C), Interaction effect fruit retention (H) x collection of seeds from different fruit positions (C) and Interaction effect varieties (V) x fruit retention (H) x collection of seeds from different fruit positions (C) for plant height at final harvest, fruit length, number of seeds per fruit, hundred seed weight and seed yield per plant was found significant. All the interactions i.e. Interaction effect varieties (V) x fruit retention (H), Interaction effect varieties (V) x collection of seeds from different fruit positions (C), Interaction effect fruit retention (H) x collection of seeds from different fruit positions (C) and Interaction effect varieties (V) x fruit retention (H) x collection of seeds from different fruit positions (C) was found non-significant for field emergence percentage, days to flower initiation, plant height at 30 DAS, seed germination percentage, root length, shoot length, seedling length, seedling fresh weight, seedling dry weight, seedling vigour index-I, seedling vigour index-II and seed moisture content.EnglishThesis