Next Article in Journal
Effects of Nitrogen Foliar Fertilization on the Vegetative and Productive Performance of the Olive Tree and on Oil Quality
Previous Article in Journal
Chemical Composition of the Cuticle Membrane of Pitaya Fruits (Hylocereus Polyrhizus)
Open AccessArticle

Thermotolerance and Physiological Traits as Fast Tools to Heat Tolerance Selection in Experimental Sugarcane Genotypes

1
Universidad Autónoma de Tamaulipas, Facultad de Ingeniería y Ciencias, Cd. Victoria, Tamaulipas 87149, Mexico
2
Campo Experimental “El Estribo”, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP), El Naranjo, San Luis Potosí 79310, Mexico
*
Author to whom correspondence should be addressed.
Agriculture 2019, 9(12), 251; https://doi.org/10.3390/agriculture9120251
Received: 29 October 2019 / Revised: 20 November 2019 / Accepted: 21 November 2019 / Published: 28 November 2019
Heat stress limits the growth, development, and yield of crop plants when it occurs during short or long periods of time. An experiment was conducted with the objectives of (i) evaluating the cell membrane thermostability (CMT) as an indicator of heat tolerance in sugarcane and to determine its relationship with physiological parameters under heat-stressed conditions, and (ii) evaluating the utility of CMT for selecting heat-tolerant genotypes in a breeding program. A total of nine elite experimental, and four commercial sugarcane genotypes were evaluated for CMT, and the results are expressed as relative cell injury (RCI). Six genotypes were classified as highly tolerant and seven as highly sensitive. We concluded that the use of RCI, as an indicator of CMT in sugarcane genotypes, is a suitable useful parameter for selecting the genotypes tolerant to heat stress in a breeding program. This procedure, combined with other characters, helps to identify sugarcane plants with the ability to maintain a high yield photosynthetic rate under stressful field conditions. Furthermore, it offers an opportunity to improve selection efficiency over that of field testing, since high temperature stresses do not occur consistently under field conditions. View Full-Text
Keywords: sugarcane; heat stress; thermostability; relative cell injury; SPAD chlorophyll meter readings (SCMR); photosynthetic rate sugarcane; heat stress; thermostability; relative cell injury; SPAD chlorophyll meter readings (SCMR); photosynthetic rate
Show Figures

Figure 1

MDPI and ACS Style

Castro-Nava, S.; López-Rubio, E. Thermotolerance and Physiological Traits as Fast Tools to Heat Tolerance Selection in Experimental Sugarcane Genotypes. Agriculture 2019, 9, 251.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop