ASSESSMENT OF SEED VIGOUR TRAITS IN ARBOREUM COTTON.
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Date
2017-08-18
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Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
An experiment was conducted entitled “Assessment of seed vigour traits in arboreum cotton”. Which was conducted at Seed Technology Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth Akola, during the Kharif season of 2015 - 2016. Five genotypes of arboreum cotton including three varieties viz., AKA-7, AKA-8, and AKA-2005-3 along with two GMS based hybrids viz., PKVSuvarna and PKVDH-1 for this study. The evaluation of six vigour traits was done in Completely Randomize Block Design, whereas sixteen yield and yield contributing traits were analysed from field experiments laid down in Randomized Block Design with five treatments and four replication. The objectives of the present study were to estimate the mean performance of seed vigour traits in arboreum cotton and to assess the correlation between seed vigour traits and yield contributing characters in arboreum cotton.
The observation were recorded on six seed vigour traits including germination per cent, root length, shoot length, seedling dry weight, seed vigour index-I and seed vigour index-II in laboratory. Whereas sixteen yield contributing characters viz., field emergence per cent, days to first flowering, days to 50% flowering, days to 50% boll bursting, plant height, number of monopodia per plant, number of sympodia per plant, number of boll per plant, number of seed per boll, boll weight, seed index, lint index, ginning per cent, oil per cent, seed cotton yield per plant and lint yield per plant were recorded. The analysis of variance revealed the substantial variability in experimental material except that of ginning per cent.
Both the hybrids viz., PKVSuvarna and PKVDH-1 exhibited superiority for all six vigour traits in comparison to three varieties. Among the varieties AKA-2005-3 performed better for vigour traits over AKA-7 and AKA-8. The difference among the treatments were statistically significant for all vigour traits.
The data were subjected to simple correlation (r) to determine relationship of each vigour trait with yield and its contributing characters, except that of ginning per cen. Almost all yields and its contributing traits exhibited significant positive correlation except that of lint index. For all traits and number of monopodia for germination per cent, root length, seedling dry weight and seed vigour index-II and field emergence per cent found significantly correlated with all seed vigour traits.
The positive and highly significant correlation were recorded in between seed cotton yield per plant and all six vigour traits viz., germination per cent (r=0.956*), root length (r=0.957*), shoot length (r=0.957*), seedling dry weight (r=0.983**), seed vigour index-I (r=0.967*) and seed vigour index-II (r=0.942*). Hence, prediction of seed vigour traits in the laboratory is possible and was effective for the determination of yield potential in arboreum cotton.
Description
The quality of seed is a major concern in agriculture throughout the world. Rapid and uniform emergence of vigorous seedlings of the desired cultivar is key event to ensure high plant performance that affects uniformity of development, yield and quality of the harvested product. These factors emphasize the importance of selecting high quality seed lots.Therefore, in the present study, preliminary attempts have been made to evaluate and compare of seed vigour with yield and its contributing characters on varieties and hybrids of deshi cotton genotypes with a view to identify dependable tests for prediction of seed potential .
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Citation
UKEY, B. N. (2017).Assessment of seed vigour traits in arboreum cotton. Department of Agricultural Botany, (SeedbTechnology) Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2017. Print. xiii, 89p. (Unpublished).