HETEROSIS IN OKRA PDF

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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This new method was adopted because of the results obtained by Malerbo-Souza et al. Monte Carmelo, UFU, Combining ability in okra. This experiment was set up in randomized blocks design RBD with four replications and used the following statistical model: Significant differences were not observed for the leaf pubescence, but the leaf length of the UFU-QBD and UFU-QBG parents, which were directly involved in obtaining the hybrids, were significantly different Three hybrid types were obtained from the two hybridization methods: This is an open-access article distributed under the terms of the Creative Commons Attribution License.

The seedlings were planted in the field 35 days after sowing. Parents and hybrids differed significantly for gca effect.

Abelmoschus esculentus; hybridization; heterosis; pollination. The plants were distributed 1: Production per plant Significant differences in production per plant PP and number of fruits per plant were observed in the different hybrids regardless of hybridization method THM and IHM Table 2. The leaf length Similarly, heterotic effects were also found for h of Hetrrosis 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.

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A traditional method is currently used in Brazil for large scale production of hybrid okra seeds. Chilean Journal of Agricultural Research Heterosis for yield and yield components in okra. Santa Cruz 47 is the cultivar most commonly used by Brazilian growers.

Okea pollination, the female flowers were protected with Kraft paper to avoid contamination from insect pollination Nascimento, This strategy guarantees okra seeds of higher physiological quality than seeds produced from the initial phase Purquerio et al.

The Asian Journal of Horticulture 3: The objective of this study was to evaluate an experimental methodology of hybridization. After extraction, the seeds were placed in pre-labeled Kraft paper bags and stored. We used the expression proposed by Fehr to evaluate the heterosis.

An analysis of C1 hybrids vs parents showed the superiority of the un to the parents in terms of production per plant and number of fruits per plant 4, These advantages have already been shown by others Mehta et al.

The branches were counted after the last harvest of the experiment. Chromossome and pollen studies.

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

During this step, two different hybridization methods were used traditional and new on the two inbred lines. 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.

Traditional hybridization method THM consisted of emasculating the female parent flowers to expose the flower stigma before anthesis and eliminate the presence of pollen. Hybridization can be more confidently confirmed by analyzing a combination of these morphological characteristics from heterosid and hybrids. Scientific communication Heterosis in okra hybrids obtained by hybridization of two methods: With this information, heterosis in okra can be exploited regardless of the method used to obtain hybrid sees.

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Despite the superior genetic potential of hybrid okra seeds, seed production remains an obstacle. Studies in Hibiscus esculentus Okra I.

However, despite high heterotic values, it is very difficult to produce hybrid okra seeds. Services on Lkra Journal. Current research has also shown the heterotic potential of hybrid okra seeds in targeting greater productivity Mehta et al. Heterobeltiosis and combining ability for earliness in okra Abelmoschus esculentus L.

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

Hybridization commenced at the peak of flowering for both lines, 92 days after transplanting. Some reports show that the number of fruits per plant is related to the action of other types of gene actions such as epistatic additive x additive that allow transgressive segregation Kulkarni et al.

Before transplanting, the soil was plowed and harrowed twice and analyzed hheterosis corrected for specific crop requirements. The species performs well in tropical regions and is especially well adapted to the tropical regions of Brazil. Principles of cultivar development.

International Journal of Biological and Chemical Sciences

Thirty-eight days after sowing, the seedlings were transplanted to the prepared and heherosis soil. Study on heterosis and combining ability for earliness and yield parameters in okra Abelmoschus esculentus L.

Next, pollen from the male parent was moved by hand to the stigma of the previously emasculated female flower. The regional climate is humid temperate with hot summers and dry winters. 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.