Photosynthetic and Canopy Characteristics of Different Varieties at the Early Elongation Stage and Their Relationships with the Cane Yield in Sugarcane

Luo, Jun; Pan, Yong‐Bao; Xu, Liping; Zhang, Yuanjian; Zhang, Hua; Ru-kai, Chen; Que, Youxiong

doi:10.1155/2014/707095

Cited by 9 publications

(14 citation statements)

References 7 publications

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“…Such change ultimately reduces gaseous exchange causing perturbed photosynthetic activity and instigating low sink production. It can also be presumed that the low cane yield of high sugar content genotypes maybe because of the decimal behavior of stomata caused by high sucrose content 52 . The role of genotypic makeup against response to doses of radiation was evident from the varying response of genotypes.…”

Section: Discussionmentioning

confidence: 99%

Revisiting the physical mutagenesis for sugarcane improvement: a stomatal prospective

Yasmeen

Khan

2020

Sci Rep

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This study was conducted to investigate the influence of gamma rays on stomatal parameters and the interaction of these traits with agronomy of the sugarcane crop. Three genotypes of sugarcane (NIA-0819, NIA-98, and BL4) were exposed to four doses of gamma radiation (10, 20, 30, and 40 Gy) and then subjected to field trials. Stomatal length, width, and density were observed using scanning electron microscopy. Moreover, agronomic and sugar-related characteristics of the crop were determined at maturity. The stomatal parameters augmented at two lower doses of gamma radiation (10 and 20 Gy) and declined under higher doses (30 and 40 Gy). The maximum stomatal length was observed in NIA-0819 at 10 Gy (63.71 µm), whereas NIA-98 and BL4 demonstrated highest stomatal length under 20 Gy (54.11 and 57.40 µm, respectively), indicating a role of genetic factors in varietal response. Similar trend was noticed for stomatal width and density as well. The lowermost treatment (10 Gy) of NIA-0819 produced maximum stomatal density (115.31 stomata mm-2 on the abaxial surface). Adaxial stomatal density was significantly lower than the abaxial one. Sugar quality attributes revealed a different tendency. Sucrose contents of BL4 increased gradually from 12.33% at control to 14.54% at 40 Gy. Yield and yield-contributing traits of genotypes indicated a strong positive correlation with the stomatal parameters. The present study suggested that gamma radiations cause variations in stomatal characteristics of sugarcane. These changes further influence the photosynthetic activity and instigate a direct impact on the agronomic performance of the crop.

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Section: Discussionmentioning

confidence: 99%

Revisiting the physical mutagenesis for sugarcane improvement: a stomatal prospective

Yasmeen

Khan

2020

Sci Rep

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“…In rice, a combined method of stepwise regression equation and correlation analysis was used to identify five morphological and yield indicators (plant height, spikelets per panicle, seed set, 1000-grain weight, and yield per plant) to evaluate low N tolerance (Hu et al, 2015). However, in sugarcane, a stepwise regression equation was only used in the estimation of cane yield (Luo et al, 2014). In our research, principle componential analysis, correlation analysis, stepwise regression analysis and path analysis were all carried out to evaluate the physiological and agronomic parameters for the selection of characteristic indictors to predict the NUE of sugarcane.…”

Section: Discussionmentioning

confidence: 99%

The Physiological and Agronomic Responses to Nitrogen Dosage in Different Sugarcane Varieties

et al. 2019

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Nitrogen (N) is very important for sugarcane yield improvement, but the excessive application of N fertilizer brings about N pollution and a cost increase. Through distinguishing the difference of nitrogen use efficiency (NUE), we can reasonably apply N fertilizer according to the NUE characteristics of sugarcane varieties, and thus reduce N loss and maintain high yield. The present study showed the pot experiment results of identifying NUE types of nine main sugarcane varieties in the main sugarcane producing areas of China under controlled conditions, and identified the key physiological and agronomic indictors which can help to determine the NUE types of sugarcane. The test clones were exposed to varying levels of N fertilizer and 15 parameters that are likely to impact NUE were measured. The key results are (1) Sugarcane variety ROC22 has the high plant dry weight (PDW) and NUE among nine varieties under different N rates, it can take advantages under low N supply (225 kg/hm 2 urea), and less N fertilizer can be applied properly in production. (2) Varieties of GT32 was good performing genotype for PDW and NUE under low N supply (225 kg/hm 2 urea), GT42 was more suitable for moderate N environment (450 kg/hm 2 urea), while YT94-128 was at middle N and high N supply (450–675 kg/hm 2 urea). (3) Late stage of shoot elongation is suitable for differentiating sugarcane clones for NUE. (4) Leaf glutamine synthetase activity is the most reliable predictor of NUE in sugarcane. The result of pot experiment is sufficient to differentiate clonal variation for NUE in sugarcane as it reflects field experimental results. This study can set up a basis for identification the NUE types of sugarcane varieties and the development of reasonable N fertilizer application.

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“…Genetic variation in photosynthetic rate, leaf area; tops, root and total biomass was found in sugarcane varieties (Basnayake, Jackson, Inman-Bamber, & Lakshmanan, 2012;Jackson et al, 2016;Li et al, 2017;Luo et al, 2014;Ramesh, 2000). In our study, significant variations were found in growth and dry matter parameters at both 60 and 120DAT, whereas the difference in A max just at 60DAT among Ni21 with NiF3, Ni9, and Ni17 at 60DAT.…”

Section: Discussionmentioning

confidence: 42%

Nitrogen use efficiency and drought tolerant ability of various sugarcane varieties under drought stress at early growth stage

Hoang

Takaragawa

Kawamitsu

2018

Plant Production Science

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The experiment was conducted under glasshouse conditions to evaluate nitrogen use efficiency and drought tolerant ability of the five different sugarcane varieties (including NiF3, Ni9, Ni17, Ni21 and Ni22) under early growth stage from 60 to 120 days after transplanting. The results showed drought stress reduced the photosynthetic rate, growth parameters including plant height, leaf area; partial and total dry weights; and nitrogen use efficiency (NUE) traits including photosynthetic NUE, nitrogen utilization efficiency and biomass NUE of measured sugarcane varieties. The significant differences were found among varieties in growth parameters, dry weights, NUE traits and drought tolerant index (DTI). The significant positive correlations among NUE traits and DTI suggested higher NUEs could support better a tolerant ability to drought stress at the early growth stage. Because of larger contributions, DTIs for aboveground and stalk dry weight could be used as the important DTIs to evaluate drought tolerant ability in sugarcane varieties.

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Photosynthetic and Canopy Characteristics of Different Varieties at the Early Elongation Stage and Their Relationships with the Cane Yield in Sugarcane

Cited by 9 publications

References 7 publications

Revisiting the physical mutagenesis for sugarcane improvement: a stomatal prospective

Revisiting the physical mutagenesis for sugarcane improvement: a stomatal prospective

The Physiological and Agronomic Responses to Nitrogen Dosage in Different Sugarcane Varieties

Nitrogen use efficiency and drought tolerant ability of various sugarcane varieties under drought stress at early growth stage

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