PG Thesis

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Subject: search.filters.subject.Heterosis in brinjal

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    Heterosis for yield and resistance to bacterial wilt in brinjal
    (Department of Plant Breeding, College of Agriculture, Vellayani, 1987) Jameela Thomas; Gopinathan Nair, V
    Bacterial wilt of brinjal (Solanum malongena L.) caused by Pseudomonas colanacearum E.F Smith is a serious threat to brinjal cultivation all over India. Most of the commercial varieties are highly susceptible to this disease and hence unsuitable for cultivation in wilt endemic areas. Farmers in many places have been forced to abandon cultivation due to heavy incidence of bacterial wilt. Fine cross combinations were made between three resistant varieties (Pusa purple cluster, SM-6 and SMI-10) as ovule parents and each of three commercialbut susceptible varieties (Black beauty, Puma purple long and Puca purple round) as pollen parent , with a view to combine the wilt resistance of the former and high yield potential of the latter. The bacterial pathogen causing wilt in brinjal was isolated. Based on the cultural and physiological characters it was identified as Pseudomonas solanaecearum.
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    Study on the F1 hybrids between cultivated and wild brinjal varieties [Solanum melongena, Linn. (cultivars) X Solanum melongena var. insanum, Prain.]
    (Division of Agricultural Botany, Agricultural College & Research Institute, Vellayani, 1968) Gopimony, R; Sreenivasan, K
    1. The cyto-morphological and chemical aspects of 3 F1 hybrids of crosses involving 3 cultivated brinjal varieties (Round Special, Round Mixed and Purple Long Datta) and one wild brinjal variety (S. malongena var. insanum) were studied. 2. All the 3 F1 hybrids showed a high degree of heterosis in many economically important characters like numberof branches, earliness, total number of flowers and total number of fruits per plant. 3. The F1 hybrids were intermediate in flower size, mean leaf area, percentage of fruit set, number of seeds per fruit and germination percentage of F2 seeds. 4. In fruit size of the F12 were approximating more to the geometric mean than arithmetic mean of the two parents.
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    Heterosis and genetic analysis involving isogenic lines in brinjal resistant to bacterial wilt
    (Department of Olericulture,College of Horticulture, Vellanikkara, 1989) Geetha, P T; Peter, K V