Person: Piñera Chavez, F.J
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Piñera Chavez
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F.J
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Piñera Chavez, F.J
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0000-0001-7868-2396 4 results
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- Potential of rice landraces with strong culms as genetic resources for improving lodging resistance against super typhoons(Nature Publishing Group, 2021) Nomura, T.; Yoshiaki Seki; Makoto Matsuoka; Kenji Yano; Koki Chigira; Shunsuke Adachi; Piñera Chavez, F.J; Reynolds, M.P.; Satoshi Ohkubo; Taiichiro Ookawa
Publication - Lignin and structural and non-structural carbohydrates and their association with stem strength components of irrigated spring wheat(CIMMYT, 2017) Piñera Chavez, F.J; Berry, P.M.; Foulkes, J.; Molero, G.; Reynolds, M.P.
Publication - Avoiding lodging in irrigated spring wheat. II. Genetic variation of stem and root structural properties(Elsevier, 2016) Piñera Chavez, F.J; Berry, P.M.; Foulkes, J.; Molero, G.; Reynolds, M.P.Lodging-related traits were evaluated on the CIMMYT Core spring wheat Germplasm Panel (CIMCOG) inthe Yaqui Valley of North-West Mexico during three seasons (2010–2013). Genetic variation was signif-icant for all the lodging-related traits in the cross-year analysis, however, significant G × E interactiondue to rank changes or changes in the absolute differences between cultivars were identified. The incon-sistences on cultivar performances across seasons particularly reduced the heritability of key charactersrelated to root lodging resistance (anchorage strength). Target characters related to stem lodging resis-tance (stem strength) showed good heritability values equal or above 0.70. Positive correlations betweenstem strength and stem diameter and between root plate spread and root strength were found. Select-ing for greater stem diameter and wall width, greater root plate spread and shorter plant height couldenable breeders to increase lodging resistance by increasing stem strength, root strength and decreasingplant leverage, respectively. Achieving a lodging-proof crop will depend on finding a wider root platespread and implementing new management strategies. Genetic linkages between lodging traits will notconstrain the combination of the key lodging-trait dimensions to achieve a lodging-proof ideotype. How-ever, strong association between stem strength and stem wall width will increase the total biomass costneeded for lodging resistance.
Publication - Avoiding lodging in irrigated spring wheat. I. Stem and root structural requirements(Elsevier, 2016) Piñera Chavez, F.J; Berry, P.M.; Foulkes, J.; Jesson, M.; Reynolds, M.P.A model of the lodging process has been successfully adapted for use on spring wheat grown in North-West Mexico (NWM). The lodging model was used to estimate the lodging-associated traits required to enable spring wheat grown in NWM with a typical yield of 6 t ha−1 and plant height of 0.7 m to achieve a lodging return period of 25 years. Target traits included a root plate spread of 51 mm and stem strength of the bottom internode of 268 N mm. These target traits increased to 54.5 mm and 325 N mm, respectively, for a crop yielding 10 t ha−1. Analysis of multiple genotypes across three growing seasons enabled relationships between both stem strength and root plate spread with structural dry matter to be quantified. A NWM lodging resistant ideotype yielding 6 t ha−1 would require 3.93 t ha−1 of structural stem biomass and 1.10 t ha−1 of root biomass in the top 10 cm of soil, which would result in a harvest index (HI) of 0.46 after accounting for chaff and leaf biomass. A crop yielding 10 t ha−1 would achieve a HI of 0.54 for 0.7 m tall plants or 0.41 for more typical 1.0 m tall plants. This study indicates that for plant breeders to achieve both high yields and lodging-proofness they must either breed for greater total biomass or develop high yielding germplasm from shorter crops.
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