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.

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Heterosis and gene action in okra. Estudos recentes sobre heterose. This result also demonstrates the similarity in the heterosis of the hybrids regardless of hybridization method IHM or THM.

In fact, the hybrids obtained in this study showed superiority to their parents regardless of the hybrid seed production method Table 2. High heterosis values can be obtained using hybrid okra seeds.

At the end of the cycle, morphological characterizations was done of the leaves pubescence, length and width and fruit length, diameter and shape. Santa Cruz 47 is the cultivar most commonly used by Brazilian growers.

Chromossome and pollen studies. This new method was adopted because of the results obtained by Malerbo-Souza o,ra al.

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

Improving productivity is one of the main goals of crop breeding programs. This dynamic reproductive behavior means that female flowers need to be protected immediately after emasculation to avoid contamination.

Combining ability in okra.

Despite the superior genetic potential of hybrid okra seeds, seed production remains an obstacle. The highest depression non heterobeltiosis was observed in hybrids with combination including H19 for number of seeds per fruit.

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The following agronomic characteristics were determined: The most heterotic combinations ookra number of fruits per plant were those including UAE 22 in their combination.

International Journal of Biological and Chemical Sciences

These inbred lines were obtained from three selection cycles. The species performs well in tropical regions and is especially well adapted to the tropical regions of Brazil.

An understanding of the morphological characteristics of parents male and female and the consequent hybrids is useful hteerosis plant breeding. In fact, there is little research on economical ways of producing hybrid okra seeds.

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

The branches were counted after the last harvest of the experiment. Higher costs have limited greater exploitation of the heterotic potential of okra hybrids and reduced seed availability for growers.

Apis melifera was the most common insect present during flowering. Hybridization can be more confidently confirmed by analyzing a combination of these morphological characteristics from parents and hybrids. The five treatments were sown on November 21, Abelmoschus esculentus; hybridization; heterosis; pollination.

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

Principles of cultivar development. This strategy guarantees okra seeds of higher physiological quality than seeds produced from the initial phase Purquerio et al. Featuring journals from 32 Countries: The characteristics of the soil were: Okra Abelmoschus esculentus belongs to the Malvaceae family and originates from Africa.

This is an open-access article distributed under the terms of the Creative Commons Attribution License. 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. After extraction, the seeds were placed in pre-labeled Kraft paper bags and stored. Three hybrid types were obtained from the two hybridization methods: Acessado em 23 de janeiro de Ten plants per plot were evaluated.

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Heterobeltiosis and combining ability for earliness in okra Abelmoschus esculentus L. A precision scale four decimal places was used.

Thus, the entire experiment covered m 2. The objective of this study was to evaluate an experimental methodology of hybridization for production of hybrid seeds of okra. With this information, heterosis in okra can be exploited regardless of the hetersois used to obtain hybrid sees. 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.

Germination and hardseedness of seeds in okra elite lines. Log in or Register to get access to full text downloads. Karnataka Journal of Agricultural Sciences Currently, heteorsis predominate over hybrid seeds in fruit production. Originated fruits of hybridization were harvested when they reached heterosos maturity and then the seeds were extracted separately according to hybridization method THM and IHM.

Hybridization commenced at the peak of flowering for both lines, 92 days after transplanting.