HETEROSIS IN OKRA PDF

In our study, 24 hybrids obtained by diallel cross between ecotypes of okra were subjected to analysis of their combining ability effects and hybrid vigor for. ABSTRACT. High heterosis values can be obtained using hybrid okra seeds. However, despite high heterotic values, it is very difficult to produce hybrid okra. Studies on Heterosis in Okra (Abelmoschus esculentus (L.) Moench) The results revealed that the standard heterosis for fruit yield per plant was maximum in.

Author: Fetilar Nilar
Country: Australia
Language: English (Spanish)
Genre: Automotive
Published (Last): 24 October 2010
Pages: 192
PDF File Size: 7.75 Mb
ePub File Size: 9.59 Mb
ISBN: 431-9-77868-821-1
Downloads: 94078
Price: Free* [*Free Regsitration Required]
Uploader: Gulrajas

The five treatments were sown on November 21, Not only did the C4, C5 and C6 contrasts show the superiority of these three hybrids, regardless of seed hybridization method, they also demonstrated the heterosis of the hybrids and the use of new method of producing hybrid okra seeds.

The fruits were harvested every three days from February 2, until June 27,totalling 41 harvests. The method consists of emasculation of the female parent followed by manual crosses, leading to high production costs Nascimento, Indian Journal Agriculcural Sciences These advantages have already been shown by others Heteross et al. The most heterotic combinations for number of fruits per plant were those heteorsis UAE heteross in their combination.

Compact okra plants i. This experiment was set up in randomized blocks design RBD with four replications and used the following statistical model: Traditional hybridization method THM consisted of emasculating the female parent flowers to expose the flower stigma before anthesis and eliminate the presence of pollen. The plants were spaced 1. Bangladesh Journal of Agricultural Research Acessado em 23 de janeiro de Twelve plants were planted per plot and spaced 1 m between plants and 1.

Currently, varieties predominate over hybrid seeds in fruit production. Novo manual de olericultura. Log in or Register to get access heterosia full text downloads.

Higher costs have limited greater exploitation of the heterotic potential of okra hybrids and reduced seed availability for growers. The new hybridization method IHM consisted of emasculating the female flowers and then allowing pollination to occur via insects that were naturally present at the experiment site.

  IL NIPOTE DI RAMEAU DIDEROT PDF

International Journal of Biological and Chemical Sciences

How to cite this article. Hybridization commenced at the peak of flowering for both lines, 92 days after transplanting.

An understanding of the morphological characteristics of parents male and female and the consequent hybrids is useful in plant breeding. Evidence of heterosis in Okra Abelmoschus esculentus landraces from Burkina Faso.

Studies on Heterosis in Okra (Abelmoschus esculentus (L.) Moench) [2010]

Heterosis resulting from the incomplete emasculation followed by natural insect pollination was similar to that from the traditional hybrid method, being a viable alternative for the production of hybrid okra seeds without losses in heterosis. Featuring journals from 32 Countries: Some studies show that gametocides can induce male sterility Deepak et al. Thirty-eight days after sowing, the heterksis were transplanted to the prepared and corrected soil. Germination and hardseedness of seeds heherosis okra elite lines.

Hybrid seeds are extensively used because they provide one of the fastest ways to increase productivity Paterniani, This strategy guarantees okra seeds of higher physiological quality than seeds produced from the initial phase Purquerio et al. Chromossome and pollen studies.

Hybridization can be more confidently confirmed by analyzing a combination of these morphological characteristics from parents and hybrids.

High heterosis values can be obtained using hybrid okra seeds. In fact, there is little research on economical ways of producing hybrid okra seeds. This dynamic reproductive behavior means that female flowers need to be protected immediately after emasculation to avoid contamination.

Significant differences were not observed for the leaf pubescence, but the leaf length hetreosis the UFU-QBD and UFU-QBG parents, which were directly involved in obtaining the hybrids, were significantly heterksis Significant differences in production per plant PP and number of fruits per plant were observed in the different hybrids regardless of hybridization method Ij and IHM Table 2. The resulting okrw seeds and their parents were evaluated via an experiment set up in a randomized block design with four repetitions.

  ICD-AX412 MANUAL PDF

Data for each of the agronomic characters were submitted to analysis of variance F test. Next, pollen from the male parent was moved by hand to the stigma of the previously emasculated heterosix flower. Current research has also shown the heterotic potential of hybrid okra seeds in targeting greater productivity Mehta et al. Abstract In our study, 24 hybrids obtained by diallel cross between ecotypes of okra were subjected to analysis of their combining ability effects and hybrid vigor for different important traits for producers and consumers.

An analysis of C1 hybrids vs parents showed the superiority of the hybrids to the parents in terms of production per plant and number of fruits per plant 4, With this information, heterosis in okra can be exploited regardless of the method used to obtain hybrid sees.

These inbred lines were obtained from three selection cycles. Monte Carmelo, UFU, The highest depression non heterobeltiosis was observed in hybrids with combination including H19 for number of seeds per fruit. Genetic important yield components in bhindi. The objective of this study was to evaluate an jeterosis methodology of hybridization. Heterosis for yield and yield components in okra Abelmoschus esculentus L.

Ten plants per plot were evaluated.

Heterosis in okra hybrids obtained by hybridization of two methods: traditional and experimental

Indian Journal of Agricultural Science A precision scale four decimal places was used. Overall, the results discussed above indicated the fact that okra hybrid with UAE 22 has great potentialities of maximizing fruit yield while hybrid H and H have the smallest days of flowering.

This is an open-access article distributed under the terms of the Creative Commons Attribution License. Conversely, mean fruit diameter