HETEROSIS IN OKRA PDF

By admin No comments

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: Mazule JoJorn
Country: Trinidad & Tobago
Language: English (Spanish)
Genre: Personal Growth
Published (Last): 1 March 2004
Pages: 471
PDF File Size: 18.62 Mb
ePub File Size: 6.70 Mb
ISBN: 773-1-57625-287-4
Downloads: 81765
Price: Free* [*Free Regsitration Required]
Uploader: Dujinn

Production per ookra Studies in Hibiscus esculentus Okra I. The fruits were harvested every three days from February 2, until June 27,totalling 41 harvests.

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

With this information, heterosis in okra can be exploited regardless of the method used to obtain hybrid sees. After pollination, the female flowers were protected with Kraft paper to avoid contamination from insect pollination Nascimento, High heterosis values can be obtained using hybrid okra seeds.

Combining ability in okra.

Hybridization commenced at the peak of flowering for both lines, 92 days after transplanting. A precision scale four decimal places was used.

Parents and hybrids differed significantly for gca effect. The characteristics of the soil were: Not only did the Hheterosis, 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.

  74AC02 DATASHEET PDF

Services on Demand Journal. Conversely, mean fruit diameter The method consists of emasculation of the female parent okrz by manual crosses, leading to high production costs Nascimento, The regional climate is humid temperate with hot summers and dry winters. 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.

Thus, the traditional and more labor intensive okra seed hybridization method THM can be reliably replaced by the less labor intensive method IHM without any loss in heterosis. Twelve plants were planted per plot and spaced 1 m between plants and 1.

The number i branches per plant was statistically different between the genotypes evaluated in our study. Originated fruits of hybridization were harvested when they reached physiological maturity and then the seeds were extracted separately according to hybridization method THM and IHM.

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 kkra smallest days of flowering. Chromossome and pollen studies. The objective of this study was to evaluate an experimental methodology of hybridization for production of hybrid seeds of okra.

International Journal of Biological and Chemical Sciences

Indian Journal of Genetics Breeding Three hybrid types were obtained from the two hybridization methods: Thus, the entire experiment covered m 2. Okra Abelmoschus esculentus belongs to the Malvaceae family and originates from Africa. We used the expression proposed by Fehr to evaluate the heterosis. 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, During this heterlsis, two different hybridization methods were used traditional and new on the two inbred lines.

  HISTOIRE DU FOUTA TORO PDF

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

This new method was adopted because of the results obtained by Malerbo-Souza et al. These inbred lines were obtained from three selection cycles. Heterosis for yield and yield components in okra Abelmoschus esculentus L.

Thirty-eight days after sowing, the seedlings were transplanted to the prepared and corrected soil. The seedlings were planted in the field 35 days after sowing.

Novo manual de olericultura. The Asian Journal of Horticulture 3: Chemical induction of male sterility and histological studies in okra Abelmoschus esculentus L. Both inbred lines started flowering approximately 65 days after transplanting. The five treatments were sown on November 21, Some reports show that the number of fruits per plant is related to the action of other hetefosis of gene actions such as epistatic additive x additive that allow transgressive segregation Kulkarni et al.

Featuring journals from heterodis Countries: This dynamic reproductive behavior means that female flowers need to be protected immediately after emasculation to avoid contamination. This experiment was set up in randomized blocks design RBD with four replications and used the following statistical model: