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Hybridization of Tomato for Developing Winter and Summer Variety

M.A.Goffar
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

G.M.A. Halim
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

P. Hanson
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

Abstract/ Executive Summary:

A hybridization work among eight parents of tomato inbreeds was done at the experimental field of Vegetable Division, HRC.BARI, Gazipur during the winter season of 2017-18. Crossings work was made following half diallel fashion. The seeds of 28 crossed (F₁) along with parents were collected and preserved for assessing combining ability and heterossis during summer and winter season of 2018-19.

Keywords: Vegetables, Tomato, Hybrid tomato, Hydroponic technology, Fruit yield per plant

Location: Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

Start Date: 00-00-2017

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Tomato

Objectives:

To produce F₁tomato seeds for evaluating GCA, SCA and heterosis in next season to develop new summer and winter hybrid tomato varieties.

Methodology:

One set of inbred having eight variabilities in respect of earliness, fruit size, number of fruits, fruit yield per plant, heat tolerance, tolerance to bacterial wilt (BW) and root-knot nematode (RKN) was included in this crossing program. Seedlings of the female line at 30 days were transplanted in 3^rd week of November 2017 while; male parent was transplanted 10 days ahead of a female one. There were 20 plants for each combination transplanted for making crosses. Plant protection, irrigation and other intercultural operations were done as and when necessary as normal crop production. Crossing work was done maintaining half diallel fashion as mentioned by B. Griffing, 1956. As maximum as a possible number of crosses were made for producing hybrid seeds. Fruits were harvested at the full ripening stage and allowed two days storage for postharvest ripening. After that seeds were extracted, washed, dried, weighed and stored properly.

Source of Information: Annual Research Report 2017-2018, Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among 28 crosses, F₁crosses having heat-tolerant parents (13 crosses with 8 parents) are being trialed this summer season (transplanted in the experimental field on July 12, 2018) for assessing combining ability and heterosis. The remaining crosses (winter group) will be used during the winter season of this year.

Knowledge Management: Report/Proceedings