Ripening and the Use of Ripeners for Better Sugarcane Management

Silva, Marcelo de Almeida; Caputo, Marina Maitto

doi:10.5772/28958

Cited by 11 publications

(6 citation statements)

References 31 publications

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“…GXB9 has comparatively shorter length of internodes but very visible internal spongy pith lines. The pith decreases yield but causes increase in sucrose content of sugarcane [ 48 ]. The stalks or internodes of both varieties exposed continuously to sun light during the course of growth displayed difference in color.…”

Section: Discussionmentioning

confidence: 99%

Morphological, agronomical, physiological and molecular characterization of a high sugar mutant of sugarcane in comparison to mother variety

et al. 2022

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Sugarcane is a significant crop plant with the capability of accumulating higher amount of sucrose. In the present study, a high sucrose content sugarcane mutant clone, GXB9, has been studied in comparison to the low sucrose mother clone B9 on morphological, agronomical and physiological level in order to scrutinize the variation because of mutation in GXB9 in field under normal environmental condition. The results showed that GXB9 has less germination, tillering rate, stalk height, leaf length, leaf width, leaf area, number of internodes, internode length and internode diameter than B9. Qualitative traits of leaf and stalk displayed significant variation between GXB9 and B9. Endogenous hormones quantity was also showed variation between the two clones. The relative SPAD reading and chlorophyll a, b concentrations also showed variation between GXB9 and B9. The photosynthetic parameter analysis indicated that the GXB9 has significantly higher net photosynthetic rate (Pn), stomatal conductance (gs) and transpiration rate (Tr) than B9. The qRT-PCR analysis of genes encoding enzymes like SPS, SuSy, CWIN, and CeS showed upregulation in GXB9 and downregulation in B9. However, these genes were significantly differentially expressed between the immature and maturing internodes of GXB9. The cane quality trait analysis showed that GXB9 had higher juice rate, juice gravity purity, brix, juice sucrose content and cane sucrose content than B9. The yield and component investigation results indicated that GXB9 had lower single stalk weight, however higher number of millable stalks per hectare than B9, and GXB9 had lower theoretical cane yield than B9. SSR marker analysis showed genetic variation between GXB9 and B9. This study has shown significant variation in the traits of GXB9 in comparison to B9 which advocates that GXB9 is a high sugar mutant clone of B9 and an elite source for future breeding.

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Section: Discussionmentioning

confidence: 99%

Morphological, agronomical, physiological and molecular characterization of a high sugar mutant of sugarcane in comparison to mother variety

et al. 2022

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“…A complex interplay between climate factors, cultivar genetic potential, and agricultural management determines when sugarcane ripens. Ripening is a natural process of sucrose accumulation acting as a shield against unfavorable environmental conditions, which is not the same as the maturity of the stalk [ 55 ]. Sugarcane crops have numerous difficulties in terms of adjusting of varieties to various production environments, with an emphasis on choosing desired traits in accordance with environmental circumstances [ 56 ].…”

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of Sucrose-Regulatory Genes in High- and Low-Sucrose Sister Clones of Sugarcane

Khan,

Qin,

Guo

et al. 2024

Plants

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Sugarcane is a significant primitive source of sugar and energy worldwide. The progress in enhancing the sugar content in sugarcane cultivars remains limited due to an insufficient understanding of specific genes related to sucrose production. The present investigation examined the enzyme activities, levels of reducing and non-reducing sugars, and transcript expression using RT-qPCR to assess the gene expression associated with sucrose metabolism in a high-sucrose sugarcane clone (GXB9) in comparison to a low-sucrose sister clone (B9). Sucrose phosphate synthase (SPS), sucrose phosphate phosphatase (SPP), sucrose synthase (SuSy), cell wall invertase (CWI), soluble acid invertase (SAI), and neutral invertase (NI) are essential enzymes involved in sucrose metabolism in sugarcane. The activities of these enzymes were comparatively quantified and analyzed in immature and maturing internodes of the high- and low-sucrose clones. The results showed that the higher-sucrose-accumulating clone had greater sucrose concentrations than the low-sucrose-accumulating clone; however, maturing internodes had higher sucrose levels than immature internodes in both clones. Hexose concentrations were higher in immature internodes than in maturing internodes for both clones. The SPS and SPP enzymes activities were higher in the high-sucrose-storing clone than in the low-sucrose clone. SuSy activity was higher in the low-sucrose clone than in the high-sucrose clone; further, the degree of SuSy activity was higher in immature internodes than in maturing internodes for both clones. The SPS gene expression was considerably higher in mature internodes of the high-sucrose clones than the low-sucrose clone. Conversely, the SuSy gene exhibited up-regulated expression in the low-sucrose clone. The enhanced expression of SPS in the high-sucrose clone compared to the low-sucrose clone suggests that SPS plays a major role in the increased accumulation of sucrose. These findings provide the opportunity to improve sugarcane cultivars by regulating the activity of genes related to sucrose metabolism using transgenic techniques.

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“…Preceding studies have proven a rise in sugarcane sucrose content along with CR application [5,6]. CR can be applied to sugarcane that is physiologically immature or confronts delayed maturity for various reasons, such as the conditions of exaggerated nitrogen and water [7,8].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Sugarcane Maturity using Glyphosate and Bispyribac Sodium as Chemical Ripeners in Wet Climate

Puspitasari,

Ariyani,

Putra

et al. 2024

BIO Web Conf.

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Sugarcane is often harvested at non-optimal maturity. Chemical ripeners (CRs) could be a solution, although they risk killing subsequent ratoon plants (SRPs). This research aimed to unravel glyphosate (Gly) and bispyribac sodium (BS) impacts as CRs on sugarcane maturity and SRPs’ growth. The research was conducted in Kebon Agung Sugar Mill, Malang, East Java, Indonesia, from May to July 2022, using the ten-month-old Bululawang variety and was sprayed with a drone. A randomized block design was used with four treatments, i.e., Gly 1,000 mL ha-1, BS 200 mL ha-1, BS 100 mL ha-1, and control. Results showed that BS 200 mL ha-1 led to a greater rise in Cane Content Sugar (CCS) and Sugar Cristal Yield (SCY) than BS 100 mL ha-1 and the control but was still lower than Gly 1 l ha-1. The best harvest time for optimal maturity was six to eight weeks after applying BS 200 mL ha-1. The highest gap was in Gly, i.e., 45% than control and can potentially lower SCY more than other CRs, while the gaps in the 100 and 200 mL ha-1 BS were 7.82% and 11.97%, respectively. The results suggest that low doses of Gly and BS can boost maturity and also avert SRPs’ death.

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Ripening and the Use of Ripeners for Better Sugarcane Management

Cited by 11 publications

References 31 publications

Morphological, agronomical, physiological and molecular characterization of a high sugar mutant of sugarcane in comparison to mother variety

Morphological, agronomical, physiological and molecular characterization of a high sugar mutant of sugarcane in comparison to mother variety

Comparative Analysis of Sucrose-Regulatory Genes in High- and Low-Sucrose Sister Clones of Sugarcane

Enhancement of Sugarcane Maturity using Glyphosate and Bispyribac Sodium as Chemical Ripeners in Wet Climate

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