Genetic enhancement of sugarcane (&lt;i&gt;Saccharum&lt;/i&gt; sp. hybrids) for resistance to red rot disease and economic traits

Babu, C.; Koodalingam, K.; Natarajan, U. S.; Shanthi, R. M.; Govindaraj, P.

doi:10.4038/jas.v4i3.1648

Cited by 13 publications

(10 citation statements)

References 1 publication

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“…Natarajan et al (2001) reported that crosses involving susceptible parents may tend to produce resistant progenies with stable resistance due to additive genetic action. Babu (2010) recommended that such transgressive segregants that arise from the susceptible parents on both sides can also be used as potential genetic stocks in resistance breeding programs. However, this cross was excluded for further analysis.…”

Section: Discussionmentioning

confidence: 99%

Genetic variability studies of Valencia groundnut varieties for late leaf spot (Phaeoisariopsis personata) resistance

Wambi¹,

Tukamuhabwa²,

Tirumalaraju³

et al. 2015

Afr. J. Plant Sci.

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The study was initiated to determine the genetic variability of late leaf spot (LLS) resistance among segregating generations of Valencia groundnut varieties. Crosses were made between NuMex-M 3 × ICGV-SM 02501, Valencia C × ICGV-SM 02501, Redbeauty × ICGV-SM 03590 and Valencia C × SGV-07009 parental lines and the resulting generations (F 1 , F 2 , BC 1 P 1 and BC 1 P 2 ,), along with parents for each cross, were evaluated for LLS resistance on a 1-9 scale under natural conditions in a randomized complete block design (RCBD) with three replications. Analysis of variance was performed for generations of each cross, coefficients of variation and heritability were estimated for all crosses except for the Valencia C × SGV-07009 cross. Three crosses showed highly significant differences among generations for LLS resistance (P≤ 0.05). The three crosses exhibited moderate to high levels of genotypic coefficient of variation (GCV) (15.43 to 23.13 %) and phenotypic coefficient of variation (PCV) (16.89 to 28.82%). The exception was the Redbeauty × ICGV-SM 03590 cross which showed low (9.50%) GCV. Broad-sense heritability (h 2 b ) estimates for LLS disease scores were moderate to high (32 to 64%) for the three crosses. The results reveal substantial variation for LLS resistance in generations of these crosses indicating that the trait under study was heritable.

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Section: Discussionmentioning

confidence: 99%

Genetic variability studies of Valencia groundnut varieties for late leaf spot (Phaeoisariopsis personata) resistance

Wambi¹,

Tukamuhabwa²,

Tirumalaraju³

et al. 2015

Afr. J. Plant Sci.

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“…Although the inherited genetics of the red rot resistant genes are not well established, there is significant progress in the development of resistant varieties against the red rot [23]. The red rot resistance is transferred in sugarcane species through interspecific, intraspecific or intergeneric crosses [77,78]. The focus of the breeding work in the Indian sub-continent is the development of red rot resistant varieties through interspecific crosses [52].…”

Section: Use Of Resistant Varieties Against Red Rotmentioning

confidence: 99%

Current and Prospective Strategies on Detecting and Managing Colletotrichumfalcatum Causing Red Rot of Sugarcane

et al. 2020

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Sugarcane is an important industrial crop because it is the major source of white sugar. It is also one of the crops for the alcohol and biofuel industries. Disease-causing organisms can significantly decrease the productivity of sugarcane plants and sugar quality. Among the disease-causing organisms, Colletotrichum falcatum Went causes the most significant economic loss (5–50%) in the sugarcane production due to red rot disease. This loss results in only 31% sugar recovery. It is reported that C. falcatum can kill sugarcane plants. Currently, there is no sustainable way of preventing red rot disease from spreading in sugarcane plantations. Many popular sugarcane varieties are no longer used in sugarcane cultivation because of their susceptibility to C. falcatum. The objectives of this manuscript were to: (i) summarize existing approaches for the early detection of red rot disease and controlling techniques of red rot disease in the field and laboratory and (ii) assess red rot disease control effectiveness so as to propose better methods for mitigating the spread C. falcatum. If our proposition is adopted or practiced, it could significantly contribute to the mitigation of C. falcatum infection in the sugarcane industry. This could enable achieving sustainable cultivation of sugarcanes to guarantee the sustainability of the sugar industry in the tropics and the subtropics.

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“…There are hybridization programs that involved other Saccharum species like S. barberi and S. sinense mainly contributing to the increased vigor, hardiness, tillering, disease resistance and environmental adaptations. S. barberi and S. sinensis are reported to have been derived from S. officinarum and S. spontaneum ( Amalraj and Balasundaram, 2006 ) and S. spontaneum itself was likely to be involved in the origin of S. officinarum ( Babu et al, 2010 ). The interaction of different genomes in a hybrid background and their contribution towards hybridity remain unclear, particularly because of their high and variable ploidy levels.…”

Section: The Sugarcane Nuclear Sub-genomes and Organellar Genomesmentioning

confidence: 99%

The Challenge of Analyzing the Sugarcane Genome

2018

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Reference genome sequences have become key platforms for genetics and breeding of the major crop species. Sugarcane is probably the largest crop produced in the world (in weight of crop harvested) but lacks a reference genome sequence. Sugarcane has one of the most complex genomes in crop plants due to the extreme level of polyploidy. The genome of modern sugarcane hybrids includes sub-genomes from two progenitors Saccharum officinarum and S. spontaneum with some chromosomes resulting from recombination between these sub-genomes. Advancing DNA sequencing technologies and strategies for genome assembly are making the sugarcane genome more tractable. Advances in long read sequencing have allowed the generation of a more complete set of sugarcane gene transcripts. This is supporting transcript profiling in genetic research. The progenitor genomes are being sequenced. A monoploid coverage of the hybrid genome has been obtained by sequencing BAC clones that cover the gene space of the closely related sorghum genome. The complete polyploid genome is now being sequenced and assembled. The emerging genome will allow comparison of related genomes and increase understanding of the functioning of this polyploidy system. Sugarcane breeding for traditional sugar and new energy and biomaterial uses will be enhanced by the availability of these genomic resources.

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Genetic enhancement of sugarcane (<i>Saccharum</i> sp. hybrids) for resistance to red rot disease and economic traits

Cited by 13 publications

References 1 publication

Genetic variability studies of Valencia groundnut varieties for late leaf spot (Phaeoisariopsis personata) resistance

Genetic variability studies of Valencia groundnut varieties for late leaf spot (Phaeoisariopsis personata) resistance

Current and Prospective Strategies on Detecting and Managing Colletotrichumfalcatum Causing Red Rot of Sugarcane

The Challenge of Analyzing the Sugarcane Genome

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