Browsing by Author "Alcalde, J.A."

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    Consumer preferences and sensory characteristics of eggs from family farms
    (2020) Berkhoff, J.; Alvarado Gilis, C.; Keim, J. P.; Alcalde, J.A.; Vargas Bello, Einar; Gandarillas Henríquez, Mónica
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    Low night temperatures during the early growth phase enhance flowering in primocane shoots of red raspberries (Rubus idaeus L.)
    (2019) Contreras, E.; Grez, Javiera; Sanchez, S.; Alcalde, J.A.; Neri, D.; Gambardella C., Marina
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    Quantitative effects of the genes Lf, Sn, E, and Hr on time to flowering in pea (Pisum sativum L.)
    (OXFORD UNIV PRESS, 1999) Alcalde, J.A.; Wheeler, T.R.; Summerfield, R.J.; Norero, A.L.
    Flowering time in pea (Pisum sativum L.) is determined by genetically controlled responses to photoperiod and temperature. To investigate these responses, 11 lines homozygous for the flowering genes Lf, Sn, E, and Hr were grown under contrasting semi-controlled photothermal environments and the durations (d) from sowing to first flower (f) were recorded. The effects of the four genes were quantified using a two-plane photothermal model which linearly relates the rate of progress from sowing to flowering (1/f) with the mean pre-flowering values of temperature (T) and/or photoperiod (P), based on 1/f=a+bT (when P is longer than the critical photoperiod, P,) and 1/f=a'+b'T+c'P (when P P-c, which increased in the sequence Lf(d)P-c) and photothermal (P less than or equal to P-c) domains, mainly by increasing a and b', respectively. Variations in the coefficients of the thermal and photothermal responses determined that the critical photoperiod varied with temperature in all photoperiod-sensitive genotypes. A common base temperature of 0.2 degrees C was determined amongst Day-Neutral Class genotypes (sn) and thermal time from sowing to flowering increased in the sequence If(a) < If