Browsing Articles publicats (Agrotecnio Center) by Author "Ochagavía Orbegozo, Helga"
Now showing items 1-6 of 6
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Developmental patterns and rates of organogenesis across modern and well-adapted wheat cultivars
Ochagavía Orbegozo, Helga; Prieto, Paula; Savin, Roxana; Slafer, Gustavo A. (Elsevier, 2021-04-12)Genetic gains in wheat yield are required to meet future demand. In order to design strategic crosses, it is essential to quantify the genetic variation among elite cultivars on traits responsible for the adaptation and ... -
Duration of developmental phases, and dynamics of leaf appearance and tillering, as affected by source and doses of photoperiod insensitivity alleles in wheat under field conditions
Ochagavía Orbegozo, Helga; Prieto, Paula; Savin, Roxana; Griffiths, Simon; Slafer, Gustavo A. (Elsevier, 2017)Variation in photoperiod sensitivity in wheat plays a major role in the crop adaptation to wide agronomic environments. Photoperiod insensitivity is provided by Ppd-Aa, Ppd-B1a and Ppd-D1a alleles. Effects of the genome, ... -
Dynamics of floret initiation/death determining spike fertility in wheat as affected by Ppd genes under field conditions
Prieto, Paula; Ochagavía Orbegozo, Helga; Savin, Roxana; Griffiths, Simon; Slafer, Gustavo A. (Oxford University Press, 2018)As wheat yield is linearly related to grain number, understanding the physiological determinants of the number of fertile florets based on floret development dynamics due to the role of the particular genes is relevant. ... -
Dynamics of leaf and spikelet primordia initiation in wheat as affected by Ppd-1a alleles under field conditions
Ochagavía Orbegozo, Helga; Prieto, Paula; Savin, Roxana; Griffiths, Simon; Slafer, Gustavo A. (Oxford University Press, 2018)Wheat adaptation is affected by Ppd genes, but the role of these alleles in the rates of leaf and spikelet initiation has not been properly analysed. Twelve near isogenic lines (NILs) combining Ppd-1a alleles ... -
Earliness per se by temperature interaction on wheat development
Ochagavía Orbegozo, Helga; Prieto, Paula; Zikhali, Meluleki; Griffiths, Simon; Slafer, Gustavo A. (Nature Publishing Group, 2019-02-22)Differences in time to heading that remain after photoperiod and vernalisation requirements have been saturated are classified as earliness per se (Eps) effects. It has been commonly assumed that Eps genes are purely ... -
Earliness per se x temperature interaction consequences on leaf, spikelet and floret development in wheat
Prieto, Paula; Ochagavía Orbegozo, Helga; Griffiths, Simon; Slafer, Gustavo A. (Oxford University Press, 2019-12-26)Wheat adaptation can be fine-tuned by Eps genes. Although the effects of Eps genes are often assumed to act independently of the environment, previous studies have shown they exhibit temperature-sensitivity. Number of ...