Registration of ‘CP 05‐1526’ Sugarcane

Zhao, Duli; Comstock, Jack C.; Glaz, B.; Edmé, Serge J.; Davidson, R. Wayne; Gilbert, Robert A.; Glynn, Neil C.; Sood, Sushma; Sandhu, Hardev S.; McCorkle, Katherine; Miller, J. D.; Tai, P. Y. P.

doi:10.3198/jpr2013.02.0007crc

Cited by 7 publications

(9 citation statements)

References 17 publications

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“…Multiple approaches have been and are being used for eliminating rust negative effect on yield of sugarcane. These include disease monitoring, adjustment of management practices, fungicide applications (Raid et al, 2011) and development of new cultivars with resistance to orange rust by intensive screening in the breeding program (Zhao et al, 2013). The increase in frequent applications of fungicides results in high input cost and low net profits of sugarcane production (Jiang, 1985;Staier et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Field Evaluation of Sugarcane Orange Rust for First Clonal Stage of the CP Cultivar Development Program

Zhao¹,

Davidson²,

Baltazar³

et al. 2015

American Journal of Agricultural and Biological Sciences

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Consistent development of high-yielding sugarcane (a complex hybrid of Saccharum spp.) cultivars with resistance or tolerance to biotic and abiotic stresses is critical to commercial sugarcane production. Currently, orange rust (caused by Puccinia kuehnii E.J. Butler) is a big challenge for the sugarcane production in Florida, USA. A better understanding of sugarcane genotypic variability in response to orange rust disease will help optimize breeding and selection strategies for disease resistance. Orange rust ratings, scaled from non-infection (0) to severe infection (4) with intervals of 0.5, were recorded from genotypes at the first clonal selection stage (Stage I) of the Canal Point sugarcane breeding and cultivar development program in Florida. Data were collected from all 14,272 and 12,661 genotypes and four replicated reference cultivars, CP 78-1628, CP 80-1743, CP 88-1762 and CP 89-2143, in July-August 2012 and 2013, respectively. Mean rust rating, % of rust infection and rust severity in each family (i.e., progeny of the cross from a female and male) and female parent and their Coefficients of Variation (CV) within and among families (females) were estimated. Results indicated that considerable variation exists in rust tolerance among families or females. The families or females for their progenies with the high susceptibility or resistance to orange rust were identified and ranked. The findings of this study are useful for evaluating sugarcane crosses and parents for rust disease and can help breeders use desirable parents for crossing and improve genotypic resistance to orange rust in the sugarcane breeding programs.

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Section: Discussionmentioning

confidence: 99%

Field Evaluation of Sugarcane Orange Rust for First Clonal Stage of the CP Cultivar Development Program

Zhao¹,

Davidson²,

Baltazar³

et al. 2015

American Journal of Agricultural and Biological Sciences

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“…The CP program consists of six stages, namely Crossing, Seedling, and Stages I, II, III, and IV (Zhao et al, 2012a). The tonnage depends on the number of stalks per unit area and mean stalk weight at harvest time (Zhao et al, 2013). Cane tonnage and sucrose content are the two primary components of sucrose yield in sugarcane.…”

Section: Researchmentioning

confidence: 99%

Assessment of Sugarcane Yield Potential across Large Numbers of Genotypes using Canopy Reflectance Measurements

et al. 2016

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Canopy reflectance indices have been used to monitor plant growth and estimate yields in many field crops. Little is known if canopy reflectance of sugarcane (a complex hybrid of Saccharum spp.) can be used to estimate growth and yield potential across large numbers of genotypes (clones) in the early stages of a breeding program. The objectives of this study were to identify clonal variation in sugarcane canopy reflectance and yield components and to determine if there were any putative relationships between canopy reflectance or reflectance indices and yield variables. In Stage II of the Canal Point sugarcane breeding and cultivar development program (CP program), canopy reflectance data were collected five to six times from each of 156 to 164 randomly selected clones during the growing seasons in 2011 through 2013 using a multispectral radiometer. Normalized difference vegetation index (NDVI) and other reflectance indices were calculated using the reflectance values. Yield traits, including stalk population, mean stalk weight, cane yield, commercial recoverable sucrose (CRS), and sucrose yield, were determined on mature plants in late October. Stalk population and cane yield were most highly correlated with reflectance at the wavebands centered at 800 and 980 nm and NDVI (r = 0.50–0.68; P < 0.0001), while CRS was not related to canopy reflectance. The best time to measure canopy reflectance for yield estimation across clones was from March to April (tillering stage). Canopy reflectance measurements at the early growth stage can be used as a screening tool to estimate yield potential for large numbers of clones in sugarcane breeding programs.

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“…For instance, the cross (family) X09-1236 in 2012 had the lowest mean brown rust rating among 295 families, but Bru1 was not detected in its parents CP03-1160 and CP04-1105 (Table 4). These results suggested that other genes may also be involved in the either durable or non-durable resistance of sugarcane plants to brown rust in addition to Bru1 [23] as reported by other studies [32][33][34][35]. Racedo et al [34] recently found that the predominant source of resistance to brown rust in the sugarcane breeding program at Tucuman, Argentina would be a resistance source independent of the Bru1 gene.…”

Section: Bru1 In Parental Clones and Rust Rating In Their Progenymentioning

confidence: 62%

“…Multiple approaches have been and are being used for eliminating the negative effects of brown and orange rusts on yields, quality, and profits of sugarcane. These include standard breeding, molecular marker assisted selection, disease monitoring, adjustment of management practices, fungicide applications, and selection of rust resistant cultivars in the breed program by intensive rust screening [23]. Studies have shown that parents producing progeny with a high frequency of transgressive segregates for agronomic traits should provide the best opportunity for sugarcane breeders to select clones superior to their parents [36].…”

Section: Relationships Between Brown and Orange Rustsmentioning

confidence: 99%

“…Although Sood et al [18] developed a whorl inoculation method to more accurately and efficiently test sugarcane genotype resistance in brown rust, it is still difficult to use the artificial inoculation test in the first clonal stage (Stage I) of the CP program because of a large number (12,000-15,000) of genotypes in this stage and because of limited resources [9]. Therefore, natural infection has been the primary means of assessing rust resistance in the Stage-I clones and further artificial inoculation tests for rust resistance are usually used in later stages (Stages II and III) of the CP program [23]. The selection of which sugarcane clones to be used as crossing parents is a critical decision for breeders.…”

Section: Introductionmentioning

confidence: 99%

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Screening for Sugarcane Brown Rust in the First Clonal Stage of the Canal Point Sugarcane Breeding Program

Zhao

Davidson²,

Baltazar³

et al. 2015

Agronomy

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Sugarcane (Saccharum spp.) brown rust (caused by Puccinia melanocephala Syd. & P. Syd.) was first reported in the United States in 1978 and is still one of the great challenges for sugarcane production. A better understanding of sugarcane genotypic variation in response to brown rust will help optimize breeding and selection strategies for disease resistance. Brown rust ratings were scaled from non-infection (0) to severe infection (4) with intervals of 0.5 and routinely recorded for genotypes in the first clonal selection stage of the Canal Point sugarcane breeding program in Florida. Data were collected from 14,272 and 12,661 genotypes and replicated check cultivars in 2012 and 2013, respectively. Mean rust rating, % infection, and severity in each family and progeny of female parent were determined, and their coefficients of variation (CV) within and among families (females) were estimated. Considerable variation exists in rust ratings among families or females. The families and female parents with high susceptibility or resistance to brown rust were identified and ranked. The findings of this study can help scientists to evaluate sugarcane crosses and parents for brown rust disease, to use desirable parents for crossing, and to improve genetic resistance to brown rust in breeding programs. OPEN ACCESSAgronomy 2015, 5 342

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Registration of ‘CP 05‐1526’ Sugarcane

Cited by 7 publications

References 17 publications

Field Evaluation of Sugarcane Orange Rust for First Clonal Stage of the CP Cultivar Development Program

Field Evaluation of Sugarcane Orange Rust for First Clonal Stage of the CP Cultivar Development Program

Assessment of Sugarcane Yield Potential across Large Numbers of Genotypes using Canopy Reflectance Measurements

Screening for Sugarcane Brown Rust in the First Clonal Stage of the Canal Point Sugarcane Breeding Program

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