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  • 1
    Online Resource
    Online Resource
    University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca ; 2020
    In:  Notulae Botanicae Horti Agrobotanici Cluj-Napoca Vol. 48, No. 1 ( 2020-03-31), p. 200-209
    In: Notulae Botanicae Horti Agrobotanici Cluj-Napoca, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Vol. 48, No. 1 ( 2020-03-31), p. 200-209
    Abstract: There is an increasing interest in the development of uchuva (Physalis peruviana L.) cultivars adapted to greenhouse farming. Sexual behavior makes it difficult to obtain uniform commercial uchuva cultivars by conventional breeding methods. Mutations induced by gamma rays is an alternative approach. M1 plants derived from 14 irradiation 60Co doses, from 0 to 275 Gy, that were applied to uchuva seeds were evaluated. Recorded data included days to first flower and growth dynamics (four to seven samplings) of morphological traits (plant height, stem diameter, basal stems) and reproductive traits (floral buds, flowers and green fruits). Treatments were distributed in a completely randomized blocks experimental design with six replications, in a greenhouse. The experimental unit was a single M1 plant. Statistical differences were found for irradiation doses, growth samplings, and its interaction. Growth dynamics results indicate that all traits showed a linear increase with plant age (R2 = 0.92* to 0.98**), but the effect of the irradiation doses on morphological and reproductive traits was no linear. Irradiation reduced plant height by 79%. M1 plants developed from irradiated seeds at doses of 125, 175 and 200 Gy showed greater stem diameter, with more basal stems, floral buds, flowers and green fruits than the control. It is concluded that intermediate irradiation doses had a stimulating effect on vegetative growth and fruiting traits of M1 uchuva plants.
    Type of Medium: Online Resource
    ISSN: 1842-4309 , 0255-965X
    Language: Unknown
    Publisher: University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca
    Publication Date: 2020
    detail.hit.zdb_id: 2271404-2
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  • 2
    In: Revista Fitotecnia Mexicana, Sociedad Mexicana de Fitogenetica A.C, Vol. 40, No. 2 ( 2017-06-20), p. 211-218
    Abstract: La inducción de mutaciones es una alternativa para generar variabilidad genética en la naturaleza, o para incrementar la variabilidad genética en una población y obtener genotipos que pueden emplearse como progenitores en programas de fitomejoramiento. La uchuva (Physalis peruviana L.) es una Solanacea cuyo fruto es una baya de sabor agridulce; cuyas semillas presentan germinación tardía. El objetivo del presente estudio fue evaluar el efecto de los rayos gamma 60Co sobre características de germinación de la semilla y vigor de plantas de P. peruviana. El estudio se realizó en invernadero con cubierta de plástico UVII720, de agosto a octubre de 2015. Los tratamientos fueron 16 dosis de rayos gamma 60Co (Gy): 0, 5, 10, 20, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300 y 350. El experimento se realizó en un diseño completamente al azar con cuatro repeticiones. La radiación no afectó el porcentaje de germinación, ni el número de hojas, pero las plántulas de semillas irradiadas emergieron 8 d antes que el testigo; con 300 y 350 Gy la supervivencia fue menor a 50 %. Las plantas de semillas irradiadas con 125, 150, 200 y 225 Gy presentaron la mayor altura y diámetro de tallo. La mayor lectura SPAD y longitud de la raíz se observaron en las plantas testigo. La mayor longitud de entrenudo se tuvo con 125, 150, 175 y 200 Gy. Mediante la aplicación de rayos gamma 60Co pueden modificarse las características de la velocidad de germinación y algunas variables relacionadas con el establecimiento y vigor de las plantas de uchuva.
    Type of Medium: Online Resource
    ISSN: 0187-7380
    Language: Unknown
    Publisher: Sociedad Mexicana de Fitogenetica A.C
    Publication Date: 2017
    detail.hit.zdb_id: 2256654-5
    SSG: 7,36
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