Cytogenetic studies of the F1 hybridSolanum indicum L. ×S. melongena L. and its amphidiploid

Rajasekaran, S.

doi:10.1007/bf01902949

Cited by 31 publications

(16 citation statements)

References 12 publications

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“…Pollen fertility of the F 1 hybrid 'Assist' was quite lower than in the parental S. aethiopicum Aculeatum Group and S. melongena. Similar results have been obtained for F 1 hybrids between S. melongena and the related Solanum species (Nishio et al, 1984;Rajasekaran, 1970Rajasekaran, , 1971Rangasamy and Kadambavanasundaram, 1974). Low pollen fertility in the present F 1 hybrid might be the result of cryptic structural differences in parental chromosomes as has been previously reported (Rajasekaran, 1970(Rajasekaran, , 1971.…”

Section: Discussionsupporting

confidence: 92%

Development of the Male-sterile Line of Eggplant Utilizing the Cytoplasm of Solanum aethiopicum L. Aculeatum Group

Khan

Isshiki

2010

J. Japan. Soc. Hort. Sci.

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In order to develop a new male-sterile line of eggplant (Solanum melongena L.), the F 1 rootstock 'Assist' (Solanum aethiopicum Aculeatum L. Group × S. melongena 'DMP') was continuously backcrossed to S. melongena 'Uttara' using 'Uttara' as a recurrent pollen parent up to BC 4 generation. All examined F 1 'Assist' produced pollen grains while BC 1 plants segregated into male fertile and sterile plants. The male-sterile plant did not produce any pollen grains. BC 2 , BC 3 , and BC 4 progenies obtained from male fertile backcross progenies were segregated into male fertile and sterile plants and each segregation ratio fitted 3 : 1. BC 3 and BC 4 progenies obtained from male-sterile backcross progenies were fixed to male-sterility without segregation. Selfed progenies of the male fertile BC 2 progeny were segregated into male fertile and sterile plants and the segregation ratio fitted 15 : 1. Therefore, the pollen non-formation characteristic is assumed to be a form of cytoplasmic male-sterility (CMS), induced by incompatibility between the cytoplasm of S. aethiopicum Aculeatum Group and the nucleus of S. melongena. Further, these segregation results indicated that two independent dominant fertility restorer (Rf) genes control the fertility restoration of this CMS. High values of fruit set, number of seeds per fruit, and the seed germination rate found in BC 4 progenies indicate that the cytoplasm of S. aethiopicum Aculeatum Group has no notable negative effect on seed fertility of S. melongena. A new male-sterile line of eggplant could be developed by utilizing the cytoplasm of S. aethiopicum Aculeatum Group.

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Section: Discussionsupporting

confidence: 92%

Development of the Male-sterile Line of Eggplant Utilizing the Cytoplasm of Solanum aethiopicum L. Aculeatum Group

Khan

Isshiki

2010

J. Japan. Soc. Hort. Sci.

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“…Our results from the morphological, biological, molecular and biochemical analyses as well as the Fusarium resistance data of the androgenic dihaploids analysed are consistent with the possibility that our somatic hybrids behave as segmental allopolyploids. Similar conclusions, based on cytogenetic and isozyme analyses, were gathered in previous studies on sexual amphidiploids of eggplant with S. indicum L. (Rajasekaran 1970) and S. integrifolium (Isshiki et al 2000), both species belonging to the same section (Oliganthes) of S. aethiopicum gr. gilo.…”

Section: Discussionsupporting

confidence: 77%

Androgenic dihaploids from somatic hybrids between Solanum melongena and S. aethiopicum group gilo as a source of resistance to Fusarium oxysporum f. sp. melongenae

et al. 2002

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Dihaploid plants were obtained through anther culture of somatic hybrids between eggplant and Solanum aethiopicum gilo. The androgenic origin of the dihaploids was demonstrated by ploidy determination (flow cytometry and chloroplast counting) and isozyme and molecular (I-SSR and RAPDs) analyses. The androgenic plants showed significant morphological variability in the traits analysed. Pollen viability in the diploid androgenic plants was drastically reduced with respect to the somatic hybrids; however most of the dihaploids produced parthenocarpic fruits. S. aethiopicum and the somatic hybrids showed complete resistance to fungal wilt caused by Fusarium oxysporum f. sp. melongenae. Out of the 41 dihaploids inoculated, 34 were symptomless. The population of androgenic plants developed may represent a useful source for introgression of the Fusarium resistance trait into eggplant.

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“…Pollen fertility of the male‐fertile F 1 hybrid was lower than those in the parental S. anguivi and S. melongena . Similar results have been obtained for the F 1 hybrids between S. melongena and the related Solanum species (Rajasekaran 1970, 1971, Rangasamy and Kadambavanasundaram 1974, Nishio et al. 1984).…”

Section: Discussionsupporting

confidence: 83%

“…1984). Low pollen fertility in the present F 1 hybrid might be the result of cryptic structural differences in the parental chromosomes as it has been previously reported (Rajasekaran 1970, 1971).…”

Section: Discussionsupporting

confidence: 67%

Development of a cytoplasmic male‐sterile line of eggplant (Solanum melongena L.) with the cytoplasm of Solanum anguivi

Khan

Isshiki

2010

Plant Breeding

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To develop a new cytoplasmic male-sterile line of eggplant utilizing the Solanum anguivi cytoplasm, the interspecific hybrid (S. anguivi · eggplant ÔSenryo 2 gouÕ) was repeatedly backcrossed to eggplant ÔUttaraÕ up to BC 5 generation to achieve cytoplasm substitution. Chloroplast and mitochondrial DNA analyses confirmed that backcross progenies had the S. anguivi cytoplasm. In the backcross progenies, male-sterile plants, whose anthers were completely devoid of pollen grains, appeared. All the backcross generations obtained from the male-fertile seed parents segregated into male-fertile and sterile types with a 3 : 1 ratio, whereas those obtained from the malesterile one were all male-sterile. The selfed progeny from a male-fertile BC 5 plant (selfed progeny 1) and the selfed progeny from the malefertile selfed progeny 1 segregated at 15 : 1 and 3 : 1 ratios, respectively. These results indicated that two independent dominant fertility restorer (Rf) genes control pollen formation. A new male-sterile line of eggplant could be developed by utilizing the cytoplasm of S. anguivi.

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Cytogenetic studies of the F1 hybridSolanum indicum L. ×S. melongena L. and its amphidiploid

Cited by 31 publications

References 12 publications

Development of the Male-sterile Line of Eggplant Utilizing the Cytoplasm of Solanum aethiopicum L. Aculeatum Group

Development of the Male-sterile Line of Eggplant Utilizing the Cytoplasm of Solanum aethiopicum L. Aculeatum Group

Androgenic dihaploids from somatic hybrids between Solanum melongena and S. aethiopicum group gilo as a source of resistance to Fusarium oxysporum f. sp. melongenae

Development of a cytoplasmic male‐sterile line of eggplant (Solanum melongena L.) with the cytoplasm of Solanum anguivi

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