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Vegetable Crops Research Bulletin

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Self-Compatibility Inheritance in Tomatillo (Physalis Ixocarpa Brot.)

Juan Mulato-Brito
  • Departamento de Fitotecnia, Universidad Autónoma Chapingo Chapingo, Edo. de México. C.P. 56230, México
/ Aureliano Peña-Lomelí
  • Departamento de Fitotecnia, Universidad Autónoma Chapingo Chapingo, Edo. de México. C.P. 56230, México
/ Jaime Sahagún-Castellanos
  • Departamento de Fitotecnia, Universidad Autónoma Chapingo Chapingo, Edo. de México. C.P. 56230, México
/ Clemente Villanueva-Verduzco
  • Departamento de Fitotecnia, Universidad Autónoma Chapingo Chapingo, Edo. de México. C.P. 56230, México
/ José de Jesús López-Reynoso
  • Departamento de Fitotecnia, Universidad Autónoma Chapingo Chapingo, Edo. de México. C.P. 56230, México
Published Online: 2007-12-31 | DOI: https://doi.org/10.2478/v10032-007-0026-4

Self-Compatibility Inheritance in Tomatillo (Physalis Ixocarpa Brot.)

One of the main limiting factors to improve tomatillo is the presence of self-incompatibility which has been reported to be gametophytic. In an early research, a self-compatible plant was found in the Rendidora landrace and this allowed us to investigate the inheritance of self-compatibility gene (s) in tomatillo. The following crosses were performed: self-compatible x self-incompatible, self-compatible x self-compatible and self-incompatible x self-incompatible and their respective reciprocal crosses. Segregation ratios on self-compatibility versus self-incompatibility in their offspring indicate that self-compatibility is not inherited via cytoplasm, so the responsible gene is located in chromosomes. The inheritance of self-compatibility is due to a single dominant gene (Sc) which is a mutation at the S locus. Self-compatible individuals are strictly heterozygous (Sc,4) and finally, the self-compatibility allele (Sc), in the male side (Sc,4), seems to be non functional when self-pollinating the Sc,4 stigma. A single gene controlling stem pubescence was also found.

Dziedziczenie Samozgodności U Miechunki Pomidorowej (Physalis Ixocarpa Brot.)

Jednym z głównych czynników ograniczających w hodowli miechunki pomidorowej jest samoniezgodność, określona w literaturze jako gametofityczna. We wcześniejszych badaniach znaleziono roślinę samozgodną w odmianie lokalnej Rendidora i to pozwoliło nam na badania genu samozgodności (s) w tym gatunku. Dokonano następujących krzyżowań: samozgodne x samoniezgodne, samozgodne x samozgodne i samoniezgodne x samoniezgodne, a także odpowiednie odwrotne krzyżowania. Stosunek samozgodności do samoniezgodności wśród potomstwa otrzymanego z tych krzyżowań wskazuje, że dziedziczenie samozgodności nie jest cytoplazmatyczne, a więc odpowiedni gen znajduje się w chromosomach. Za dziedziczenie samozgodności odpowiada jeden dominujący gen (Sc), który stanowi mutację w pozycji S. Osobniki samozgodne są ściśle heterozygotyczne (Sc,4). Allel samozgodności (Sc) po stronie męskiej (Sc,4) wydaje się być niefunkcjonalny, gdy następuje samozapylenie znamienia Sc,4. Stwierdzono również, że inny pojedynczy gen kontroluje włoskowatość łodygi u miechunki pomidorowej.

Keywords: tomatillo; Solanaceae; self-compatibility gene; stem pubescence gene; inheritance

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About the article


Published Online: 2007-12-31

Published in Print: 2007-01-01


Citation Information: Vegetable Crops Research Bulletin, ISSN (Online) 1898-7761, ISSN (Print) 1506-9427, DOI: https://doi.org/10.2478/v10032-007-0026-4. Export Citation

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