Cold Tolerance in Sugarcane Progenies Under Natural Stress

Härter, Adílson; Silva, Sérgio Delmar dos Anjos e; Verissimo, Mario Alvaro Aloisio; Antunes, William Rodrigues; Lemoes, Lucas Silva; Mascarenhas, Luize Silva; Filho, João Carlos Bespalhok; Oliveira, Ricardo Augusto de

doi:10.1007/s12355-020-00912-0

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…After the occurrence of frost events, in the last tenday-period of July 2019, the visual evaluation of leaf damage (LD) was carried out, and the proportion of the damaged leaf area by freezing was classified by a single evaluator, as follows: class 1 (highly tolerant) for plants with all-green leaves; class 2 (tolerant), plants with up to 30% dry leaves; class 3 (medium tolerant), plants with up 60% dry leaves; class 4 (sensitive), plants with up 90% dry leaves; class 5 (highly sensitive, plants with 100% dry leaves (Härter et al, 2021). The evaluation for chlorophyll contents (CHL, SPAD Index) was carried out in the first ten days of August, and the measurement was taken between 9:30 h and 11:30 h, in the median portion of the leaf +3 of the main culm of the clump, using a portable chlorophyllometer SPAD-502 Plus (Konica Minolta, Tokyo, Japan).…”

Section: Methodsmentioning

confidence: 99%

Early screening for cold tolerance in sugarcane breeding

Härter,

Antunes,

Azeredo

et al. 2023

Pesq. agropec. bras.

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The objective of this work was to evaluate the efficiency of early screening in the selection of sugarcane (Saccharum spp.) families for cold tolerance in a controlled environment. Fourteen sugarcane families were evaluated for leaf damage and chlorophyll content, in a controlled environment and in the field, after cold stress. The variance components and genotypic values of the families were estimated via REML/BLUP, as well as the genetic correlations between variables and environments. The heritabilities in the narrow sense and for family averages showed values above 0.23 and 0.76, respectively, and a genetic coefficient of variation above 13%, which confirmis the existence of variability and enables selection in both environments. The genetic correlations ranged from 0.59 to 0.88 and were significant for all combinations of variables and environments. The average coincidence index for the families between environments was 60% for the selected group and 85% for the unselected group. The early screening in the first stages of selection is efficient in breeding for cold tolerance in sugarcane families.

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Section: Methodsmentioning

confidence: 99%

Early screening for cold tolerance in sugarcane breeding

Härter,

Antunes,

Azeredo

et al. 2023

Pesq. agropec. bras.

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Cold-Induced Physiological and Biochemical Alternations and Proteomic Insight into the Response of Saccharum spontaneum to Low Temperature

Zhang

Huang

Zhou

et al. 2022

IJMS

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Sugarcane, a cash crop, is easily affected by low temperature, which results in a decrease in yield and sugar production. Breeding a new variety with cold tolerance is an essential strategy to reduce loss from cold stress. The identification of germplasms and genes/proteins with cold tolerance is a vital step in breeding sugarcane varieties with cold tolerance via a conventional program and molecular technology. In this study, the physiological and biochemical indices of 22 genotypes of S. spontaneum were measured, and the membership function analysis method was used to comprehensively evaluate the cold tolerance ability of these genotypes. The physiological and biochemical indices of these S. spontaneum genotypes showed a sophisticated response to low temperature. On the basis of the physiological and chemical indices, the genotypes were classified into different cold tolerance groups. Then, the high-tolerance genotype 1027 and the low-tolerance genotype 3217 were selected for DIA-based proteomic analysis by subjecting them to low temperature. From the four comparison groups, 1123, 1341, 751, and 1693 differentially abundant proteins (DAPs) were identified, respectively. The DAPs based on genotypes or treatments participated in distinct metabolic pathways. Through detailed analysis of the DAPs, some proteins related to protein homeostasis, carbohydrate and energy metabolism, amino acid transport and metabolism, signal transduction, and the cytoskeleton may be involved in sugarcane tolerance to cold stress. Furthermore, five important proteins related to cold tolerance were discovered for the first time in this study. This work not only provides the germplasms and candidate target proteins for breeding sugarcane varieties with cold tolerance via a conventional program and molecular breeding, but also helps to accelerate the determination of the molecular mechanism underlying cold tolerance in sugarcane.

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Winter Tolerance Potential of Genetically Diverse Sugarcane Clones under Subtropical Climate of Northern India

Kumar

Meena²,

Dhansu³

et al. 2022

Sustainability

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The low temperature (LT) conditions that prevail during winter in subtropical regions of India drastically affect the growth and yield of sugarcane. To identify low-temperature-tolerant agronomical acceptable genotypes for immediate deployment as donor parents in the subtropical sugarcane breeding program, 34 sugarcane clones belonging to 7 genetically diverse groups were evaluated under three crop environments, viz., spring planting, winter ratoon and spring ratoon, during 2015–2016 and 2016–2017. In the winter ratoon crop, commercial cane sugar and cane yield were reduced, whereas sucrose % was increased over the spring planted crop and the spring ratoon crop. The wild species and introgressed hybrid groups showed improvement for yield and quality traits in the winter ratoon crop, whereas commercial and near commercial groups showed reduction for these traits over the plant and spring ratoon crops. The tropical cultivars group was the poorest performer irrespective of the traits and crops. Yield per se under a stress environment was adjudged as the best selection criteria. For classification of sugarcane clones according to their low temperature tolerance, an index named winter tolerance index (WTI) is proposed which takes into account the winter sprouting index (WSI), winter growth and yield per se of the winter ratoon crop. The WTI had significant positive association with WSI, cane yield, millable cane population and cane length. As per the WTI ratings, the wild species of Saccharum complex and introgressed hybrid groups were rated as excellent WT clones. Subtropical commercial or advanced generation groups were poor WT clones, and tropical commercial cultivars group were winter sensitive clones. Clones such as AS04-635, AS04-1687, IK76-48, GU07-2276, IND00-1040, IND00-1038 and IND00-1039 had excellent tolerance, and GU07-3849, AS04-245, Co 0238, AS04-2097 and GU07-3774 had good WTI scores. The variety, Co 0238, may be continued for cultivation under LT regions with prophylactic measurers for red rot, while other clones listed above may be utilized in subtropical breeding programs.

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Cold Tolerance in Sugarcane Progenies Under Natural Stress

Cited by 3 publications

References 25 publications

Early screening for cold tolerance in sugarcane breeding

Early screening for cold tolerance in sugarcane breeding

Cold-Induced Physiological and Biochemical Alternations and Proteomic Insight into the Response of Saccharum spontaneum to Low Temperature

Winter Tolerance Potential of Genetically Diverse Sugarcane Clones under Subtropical Climate of Northern India

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