Inter-relationships among cane yield and commercial cane sugar and their component traits in autumn plant crop of sugarcane (original) (raw)
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Environmental Interactions of Sugarcane Genotypes and Yield Stability Analysis of Sugarcane
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Five selected genetically diversified sugarcane clones were tested for yield stability for two consecutive years at six locations in Sindh. The objective of the study was to evaluate variability, effect of environmental factors and their relationship between the various quantitative and qualitative traits. Significant differences were observed between clones for all traits. Environmental interaction had significant effects on most of the traits under study. The important yield components were positively correlated at 5% level of significance. The correlation coefficients revealed that stalk weight, stalk height, number of stalks per stool and sugar percentage were the major traits contributing to cane and sugar yields. Path analysis of sugar yield exhibited maximum direct effect of cane yield followed sugar recovery.
Correlation of Traits on Sugarcane (Saccharum Spp) Genotypes at Metahara Sugar Estate
Research Article, 2018
The research was conducted at Metahara Sugar Estate, Ethiopia (8° N latitude and 39° 52' E longitude) during the season of 2014/2015 on three soil types. Fourteen sugarcane genotypes were evaluated in a randomized complete block design with three replications to study association of characters influenced the final behavior of fourteen sugarcane genotypes regarding cane and sugar yield characters namely; number of tillers and millable cane, stalk height, stalk diameter and recoverable sucrose (%). The results indicated that genotypes CP 96 1252 and NCO 334 had shown superiority for cane and sugar yield per ha under medium soil. While, CPCL 02926 and VMC 96120 for cane yield CPCL 02 926 and CP 96 1252 for sugar yield under heavy soil; and B 52-298 and CP 04 1935 for cane yield and CPCL 02 926 and CP 04 1935 for sugar yield under light soil had shown superiority. Characters association results showed sugar yield was mainly determined by recoverable sucrose percent under heavy soil while it is by cane yield and its components number of tillers, milable stalks and plant height under medium and light soil types.
Correlation Studies of Agronomic Traits for Higher Sugar Yield in Sugarcane
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Twelve sugarcane clones were used in this study. The analysis of variance revealed significant differences among genotypes for all the plant characters. Highest cane yield (144 t/ha) was recorded in clone NIA82-1026P5 and highest Pol % (20.82) and CCS % (16.45) were observed in CP84-1198. Correlation coefficient results indicated that cane yield was positively correlated with cane girth, weight per stool, sugar yield, tiller numbers and purity % whereas Pol % and CCS % showed negative correlation with cane yield. Sugar yield showed non significant correlation with cane girth.
Journal of Experimental Agriculture International
Differential pattern of association assessed in sugarcane under two water regimes revealed that cane yield had highly significant positive correlation with stalk length, stalk diameter and single cane weight under both the environments. Physiological traits like relative water content at 60 days after planting had a positive correlation with stalk length under both the environments whereas, it was positively correlated with stalk diameter (0.46) and single cane weight (0.45) under water stressed environment. Path analysis revealed that number of tillers at 240 days had maximum positive direct effect on cane yield followed by relative water content (RWC) at 60 days, stalk length, RWC at 120 days, number of shoots at 120 days and single cane weight. Stalk length, stalk diameter, number of millable cane (NMC), number of tillers at 240 days were found important for cane yield improvement, and low number of stomata, chlorophyll, specific leaf weight (SLW) and RWC at 120 days are associated with stress tolerance.
Varietal Variation in Growth, Physiology and Yield of Sugarcane under Two Contrasting Water Regimes
The objective of this study was to determine the effects of soil moisture deficits on growth, physiology and yield of sugarcane varieties to identify drought tolerant varieties and specific traits. The experiment was conducted in 2002/03 at Sugarcane Research Institute, Sri Lanka (6 o 21'N, 80 o 48'E). Eight commercial varieties were grown under irrigated (soil water potential >-0.05 MPa) and rainfed conditions. Vegetative growth, cane yield and yield components, stomatal conductance and transpiration rates, root length densities at different depths of the soil were measured. The improved Sri Lankan variety, SL88-116, showed the highest cane and sugar yields under both water regimes. Cane yields of all varieties under irrigation were significantly (P<0.05) greater (38%-74%) than under rainfed conditions. High levels of stalk weight, leaf area index at harvest and the number of stalks per ha were correlated well with yields and varied for different varieties under rainfed conditions. Water conservation through lowering stomatal conductance, both at the individual leaf and canopy level, and developing higher root length densities in the 30-60 cm soil layer to survive during the periods of significant water deficits in the top soil layer (0-30 cm) were identified as mechanisms responsible for achieving high sugarcane yields in the rainfed environments of Sri Lanka.
World Journal of Agricultural Sciences, 2010
The investigation was carried out at the Sugarcane Research Centre, Sudan (14, 48 N°), during the season of 2003/2004 and 2004/2005. Eight sugarcane genotypes were evaluated in a randomized complete block design with four replications to study association of characters influenced the final behavior of eight sugarcane clones regarding cane yield characters namely; yield of cane (ton/ha), number of millable cane, stalk height, stalk diameter, single stalk weight and juice quality traits in terms of juice brix (%) juice pol %, juice purity % and cane fiber (%). The results indicated that genotypes R 579, SP 718210 and Co 6806 had shown superiority for yield of cane per ha where as genotype Co 527 followed by Co 997 were the best for juice pol percent. Characters association results showed a positive correlation between cane yield in one hand and number of millable stalks, stalk height, internodal number per stalk, single stalks weight on the other hand indicated improvement of one of these character may resulted in positive respone of the other character. Negative association of cane yield with stalk diameter, juice pol and purity % was noticed in this study.
Identifying Physiological and Yield‐Related Traits in Sugarcane and Energy Cane
Agronomy Journal, 2017
Core Ideas Energy cane may be an alternative crop on sand soils in the future to improve profits. It is unclear if energy cane differs from sugarcane in physiology and yield on sand soils. Energy cane had 26 to 35% greater normalized difference vegetation index and 21% higher yield than sugarcane. Increased yield of energy cane was associated with great normalized difference vegetation index and high stalk population rather than leaf net photosynthetic rate. A growing interest of producing sugarcane (a complex hybrid of Saccharum spp.) for both sugar and bioenergy and saturation of using organic soils provide an opportunity to expand production on mineral (sand) soils. However, sugarcane yields and profits on sand soils are generally low. Energy cane may be an alternative on sand soils in the future to improve profits. The objective of this study was to identify physiological and biomass traits of sugarcane and energy cane growing on sand soils. Two commercial sugarcane cultivars an...
Physiological and Yield Characteristics of 18 Sugarcane Genotypes Grown on a Sand Soil
Crop Science, 2019
ABSTRACTGrowth, yield, and yield components of sugarcane (a complex hybrid of Saccharum spp.) are important traits for growers to evaluate cultivars and for scientists to select best genotypes in the breeding and cultivar development programs. Collection of these yield data across genotypes would be labor intensive and time consuming in the early selection stages of the breeding programs with a large number of genotypes. A field experiment was conducted on a sand soil to investigate physiological and yield characteristics of 18 sugarcane genotypes and to determine relationships of leaf relative chlorophyll (SPAD reading), leaf net photosynthetic rate (Pn), and canopy normalized difference vegetation index (NDVI) with yield traits, including stalk population, length, diameter, weight, cane yield (tonnes of cane per hectare [TCH]), commercial recoverable sucrose, and sucrose yield (tonnes of sucrose per hectare [TSH]) across genotypes. The NDVI values were calculated based on canopy r...
2019
Against the background of a changing climate, water logging is a major problem for sugarcane production and results in reduced productivity. Various sugarcane genotypes cultivated in waterlogged areas show different acclimations of yield component traits. Understanding such traits under these conditions could be useful in the selection of suitable sugarcane cultivars. Therefore, the objectives of this study was to evaluate cane yield and millable cane, stalk weight, stalk length, and sugar yield of 12 sugarcane varieties in upland (short water logging period) and lowland (long water logging period) areas. Yield, sugar yield, stalk length, stalk diameter, millable cane, and weight per stalk were measured at 12 months after planting. Under both conditions, the tested sugarcane genotypes were differed in terms of yield, millable cane, single stalk weight, stalk length, stalk diameter, and sugar yield. Long water logging periods induced cane yield reduction and decreased single stalk we...