Influence of Rind Hardness on Sugarcane Quality

Abstract

Sugar recovery in a factory depends upon regular crushing and quality of varieties besides various other working parameters. Strategies for increased productivity and sugar recovery, varietal improvement can bring out through selection of parents to get maximum gains. These are governed by sugar content, fiber, rind hardness and cane yield. In order to assess the breeding value of different traits including rind hardness, study was undertaken at Sugarcane Research Institute, Shahjahanpur, during 2011-2012. Phenotypic difference and correlations among agronomic characters, basic quality characters and rind hardness in 120 segregating genotypes derived from contrast bi-parental cross (UP9530 × Co86011) of sugarcane cultivar were studied in this experiment. All the traits observed were found statistically significant among the mapping populations. The mean value of rind hardness was 5.91 with a range from 2.08 to 12.10 among 120 segregating population including their parents. Rind hardness (RHD) showed significant positive genotypic correlation with sugar yield-related traits viz; cane weight (CW, r = 0.325), cane yield (CYLD, r = 0.380) and sugar yield (SUYLD, r = 0.248). Significant negative correlation was observed for rind hardness with commercial cane sugar percent (CCS%, r = −0.388), number of millable cane (NMC, r = −0.216), hand refractometer brix %-October (HBR, r = −0.154), Brix% in juice (BR, r = −0.119) and Sucrose% in juice (SUC, r = −0.080). The simple correlation analysis showed that RHD, CW, CYLD and SUYLD showed significant positive correlation for agronomic characters, but for basic quality characters had negative correlations. Result indicated that rind hardness was found to have economically important trait due to showing significant positive and negative correlation with sugar yield and sugar content, respectively. The study also revealed that with the reduction in rind hardness, sugar recovery may increase. Present findings indicated that the rind hardness could play as a key role in the selection of elite genotypes in breeding program to develop high sugar, high yielding, erect, non-lodging, disease and insect resistant varieties. The details of the study were discussed in the manuscript.

Early Evaluation of New Sugarcane Clones in Two Crop Cycles and Interrelationships Among Yield and Agronomic Traits

“…Positive and highly significant correlations exicted between sugar recovery % and sugar yield at the phenotypic level. Singh et al (2013) showed significant and positive genotypic correlations between sugar yield and each of cane weight, cane yield, brix % and sucrose %.…”

Analisis Pertumbuhan Tanaman Tebu (Saccharum officinarum L.) Akibat Aplikasi Vermikompos dan Plant Growth Promoting Rhizobacteria (PGPR)

“…Hal ini menunjukkan bahwa pemberian PGPR mampu menurunkan kebutuhan vermikompos serta meningkatkan nilai diameter batang tanaman tebu. Hasil tebu berkorelasi positif dengan diameter tebu, jumlah anakan dan brix (Singh et al, 2013). Diameter batang dapat mencapai maksimal apabila lingkungan tumbuh tebu optimal.…”

Lignocellulosic Composition Not Associated with Stem Borer Resistance in Select Louisiana Sugarcane Cultivars

“…Prior work indicates that cultivar resistance may operate similarly between the two borer species [24] with some deviations (such as the HoCP 04-838 cultivar, which is resistant to SCB but not MRB) [25]. One aspect in determining the extent of cultivar resistance to either borer species is stalk fiber content, often associated with rind hardness [26,27]. The relationship between fiber and borer resistance has also been reported for other stem borer species in sugarcane [28,29], as well as in other poaceous crops such as maize [30][31][32] and sorghum [33,34].…”