Evaluation of drought tolerance in sugarcane genotypes using the membership function value of drought tolerance (MFVD)

Xu, Chaohua; Mao, Jun; Li, Xujuan; Burner, David; Li, Chunjia; Hussin, Shareif Hammad; Lin, Xiuqin; Liu, Hongbo; PeiFang, Zhao; Lü, Xin; Fan, Haosen

doi:10.1007/s10681-023-03167-4

Cited by 2 publications

(4 citation statements)

References 25 publications

(16 reference statements)

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“…In the present study, MFVD was significantly and positively correlated with the DC of all yieldrelated traits in both plant cane and ratoon cane. In a previous study, positive correlations have been found between MFVD and DC of biomass, stalk weight, stalk diameter, and stalk height at the growth stage and seedling stage [30], which is also supported by our results. In the association mapping panel evaluated in this study, we observed a wide variation of DC and MFVD, suggesting that there are genetic sources of drought tolerance in the panel used in this study.…”

Section: Phenotypic Data Analysissupporting

confidence: 92%

“…Ratooning ability was calculated from (CY of ratoon cane/CY of plant cane) × 100. The drought-tolerant coefficient (DC) of yield-related traits measured was calculated as:

where DC ij was the drought-tolerant coefficient of the trait (j) for the genotype (i); X ijWS and X ijNS were the values of the trait (j) for the genotype (i) evaluated under WS and NS conditions, respectively [ 30 ]. Drought tolerance for each sugarcane cultivar was evaluated by the membership function value of drought tolerance (MFVD) using the approach of Chen et al (2012) [ 75 ].…”

Section: Methodsmentioning

confidence: 99%

“…Cane diameter showed the largest DC in both crop seasons, demonstrating that this trait was less affected by drought stress in this group of accessions. Mean of MFVD was 0.37 in the plant cane and 0.36 in the ratoon cane, ranging from 0.70 in plant cane and 0.67 in ratoon cane for the drought-tolerant genotype to 0.13 in the plant cane and 0.11 in the ratoon cane for the drought-susceptible genotype, classified according to Xu et al (2023) [30]. Drought tolerant and susceptible accessions in the association population determined by the MFVD were presented in Supplementary Materials Table S2.…”

Section: Drought Indices Analysismentioning

confidence: 99%

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A Large-Scale Candidate-Gene Association Mapping for Drought Tolerance and Agronomic Traits in Sugarcane

Wirojsirasak

Songsri

Jongrungklang

et al. 2023

IJMS

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Dissection of the genetic loci controlling drought tolerance traits with a complex genetic inheritance is important for drought-tolerant sugarcane improvement. In this study, we conducted a large-scale candidate gene association study of 649 candidate genes in a sugarcane diversity panel to identify genetic variants underlying agronomic traits and drought tolerance indices evaluated in plant cane and ratoon cane under water-stressed (WS) and non-stressed (NS) environments. We identified 197 significant marker-trait associations (MTAs) in 141 candidate genes associated with 18 evaluated traits with the Bonferroni correction threshold (α = 0.05). Out of the total, 95 MTAs in 78 candidate genes and 62 MTAs in 58 candidate genes were detected under NS and WS conditions, respectively. Most MTAs were found only in specific water regimes and crop seasons. These MTAs explained 7.93–30.52% of phenotypic variation. Association mapping results revealed that 34, 59, and 104 MTAs involved physiological and molecular adaptation, phytohormone metabolism, and drought-inducible genes. They identified 19 pleiotropic genes associated with more than one trait and many genes related to drought tolerance indices. The genetic and genomic resources identified in this study will enable the combining of yield-related traits and sugar-related traits with agronomic value to optimize the yield of sugarcane cultivars grown under drought-stressed and non-stressed environments.

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Section: Phenotypic Data Analysissupporting

confidence: 92%

“…Ratooning ability was calculated from (CY of ratoon cane/CY of plant cane) × 100. The drought-tolerant coefficient (DC) of yield-related traits measured was calculated as:

Section: Methodsmentioning

confidence: 99%

Section: Drought Indices Analysismentioning

confidence: 99%

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A Large-Scale Candidate-Gene Association Mapping for Drought Tolerance and Agronomic Traits in Sugarcane

Wirojsirasak

Songsri

Jongrungklang

et al. 2023

IJMS

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“…More accurate sugarcane models for Brazil's sandy soils are essential to optimize water management decisions to (1) invest in irrigation in order to increase crop productivity and to (2) withhold water, especially in irrigated systems prior to harvest to maximize sugar content. Yield gaps for sugarcane can be closed by using crop breeding for droughttolerant cultivars [65] and irrigation [65,66]. If future climate changes increase sugarcane yield, payback for irrigation investments could decrease from 14 years to only 3 years, making such investments more feasible [67].…”

Section: Sustainability Implicationsmentioning

confidence: 99%

Water Dynamics and Hydraulic Functions in Sandy Soils: Limitations to Sugarcane Cultivation in Southern Brazil

et al. 2023

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Crop cultivation on sandy soils is susceptible to water stress. Therefore, we determined the physical-hydric attributes of a Latossolo Vermelho distrófico (Oxisol) in northwestern Paraná state, Brazil. Soil samples were collected at depth ranges of 0 to 0.2 m, 0.2 to 0.4 m, and 0.4 to 0.6 m. We measured clay, silt, sand, fine and coarse sand contents, soil particle density, soil bulk density, total porosity, microporosity, and macroporosity. We also measured soil characteristics such as saturated and unsaturated soil hydraulic conductivities, pore distribution, water retention, available water capacity, and easily available water. We also estimated soil moisture, matric potential at field capacity, and time at field capacity. Validation of associations among these soil physical-hydric attributes was performed using principal component analysis. For the sandy soils analyzed, the distributions of coarse and fine sand fractions were measured for better evaluation of the soil’s physical and hydric attributes. Higher coarse sand contents increased soil hydraulic conductivities, maximum pore diameter, and macroporosity while reducing microporosity. Fine sand content reduced conductivity and increased soil water retention in subsurface layers. Simulated sugarcane yield increased with soil water storage. These results support improving crop simulation modeling of sugarcane to support sustainable intensification in regions with sandy soils.

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Evaluation of drought tolerance in sugarcane genotypes using the membership function value of drought tolerance (MFVD)

Cited by 2 publications

References 25 publications

A Large-Scale Candidate-Gene Association Mapping for Drought Tolerance and Agronomic Traits in Sugarcane

A Large-Scale Candidate-Gene Association Mapping for Drought Tolerance and Agronomic Traits in Sugarcane

Water Dynamics and Hydraulic Functions in Sandy Soils: Limitations to Sugarcane Cultivation in Southern Brazil

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