Sugarcane Breeding Institute, Coimbatore, India Effect of Different Levels of Drought during the Formative Phase on Growth Parameters and its Relationship with Dry Matter Accumulation in Sugarcane

Ramesh, P.

doi:10.1046/j.1439-037x.2000.00404.x

Cited by 104 publications

(81 citation statements)

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“…2a) and decreased green leaf area (Table 4). The formative phase (i.e., tillering and grand growth) has been identified as the critical water demand period and the phase during which sugarcane is most sensitive to drought (Ramesh, 2000). Water deficit decreased mean stalk weight and the number of stalks, resulting in low cane yields (De Silva and Costa, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Water deficit decreased mean stalk weight and the number of stalks, resulting in low cane yields (De Silva and Costa, 2004). Ramesh (2000) suggested that measurements of growth variables during the formative phase may help predict sugarcane total biomass at final harvest. However, destructive measurements of biomass for a large number of samples are cost and time consuming.…”

Section: Discussionmentioning

confidence: 99%

“…In sugarcane, four distinct growth stages (i.e., germination, tillering, grand growth and maturity) have been characterized (Gascho and Shih, 1983). The tillering and grand growth stages, known as the sugarcane formative phase, have been identified as the critical water demand period (Ramesh, 2000). This is mainly because 70-80% of cane yield is produced during this phase (Singh and Rao, 1987).…”

Section: Introductionmentioning

confidence: 99%

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Sugarcane Response to Water-Deficit Stress during Early Growth on Organic and Sand Soils

Zhao¹,

Glaz²,

Comstock³

2010

American Journal of Agricultural and Biological Sciences

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Problem statement: Approximately 20% of sugarcane (Saccharum spp.) is grown on sand soils in south Florida, USA. Sugarcane yields in the region linearly increased in last 33 years on organic (muck) soils, but not on sand soils. Water deficit during the formative growth phase on sand soils probably limits sugarcane yields. Approach: A greenhouse study was conducted in 2009 and 2010 to evaluate the physiological and growth responses of sugarcane to water-deficit stress during formative growth. Treatments included organic (muck) and sand soils and two water regimes Well Watered (WW) and Water-Deficit Stress (WS). Sugarcane cultivar CP 80-1743 was planted in pots and fertilized with N, P and K based on soil analyses. All pots were well watered until 58 days after planting, when water was withheld from the WS pots. During the WS treatment, plant growth rate, leaf Relative Water Content (RWC), proline content and photosynthesis components were measured. Final tillers, Green Leaf Area (GLA) and shoot biomass were determined 27 (in 2009) or 22 (in 2010) days after initiating the WS treatment. Results: Stress symptoms of sugarcane plants appeared 7-10 days earlier on sand soil than on muck soil. Water stress reduced stomatal conductance (gs), Photosystem II Photochemical Efficiency (ΦPSII), leaf Photosynthesis rate (Pn), the number of tillers and GLA, resulting in reduced shoot biomass, especially on sand soil. Neither leaf RWC nor proline content was a sensitive WS indicator. Conclusion: Nondestructive measurements of physiological traits of gs, ΦPSII and Pn during the formative stage may be useful for early detection of water stress in sugarcane.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sugarcane Response to Water-Deficit Stress during Early Growth on Organic and Sand Soils

Zhao¹,

Glaz²,

Comstock³

2010

American Journal of Agricultural and Biological Sciences

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show abstract

“…The tillering and grand growth stages, known as the sugarcane formative phase, have been identified as the critical water demand period (Ramesh, 2000), mainly because this is the phase when 70-80% of cane yield is produced (Singh and Rao, 1987). Water relations and photosynthetic responses to water deficit stress during this growth stage could therefore be useful in identifying drought tolerant genotypes.…”

Section: Introductionmentioning

confidence: 99%

Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane

Silva¹,

Jifon

Silva

et al. 2007

Braz. J. Plant Physiol.

266

159

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Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane: Drought is one of the major limitations to plant productivity worldwide. Identifying suitable screening tools and quantifiable traits would facilitate the crop improvement process for drought tolerance. In the present study, we evaluated the ability of four relatively physiological parameters (variable-to-maximum chlorophyll a fluorescence ratio, F v /F m ; estimated leaf chlorophyll content via SPAD index; leaf temperature, LT; and, leaf relative water content, RWC) to distinguish between drought tolerant and susceptible sugarcane genotypes subjected to a 90-d drought cycle. Eight field-grown genotypes were studied. By 45 d after the onset of treatments, the F v /F m , SPAD index and RWC of drought-stressed plants had declined significantly in all genotypes compared to values at the onset of well-watered treatments. However, the reductions were more severe in leaves of susceptible genotypes. Under drought stress, the tolerant genotypes as a group, maintained higher F v /F m (8%), SPAD index (15%), and RWC (16%) than susceptible genotypes. In general, LT of drought-stressed plants was higher (~4°C) than that of well-watered plants but the relative increase was greater among drought susceptible genotypes. Under drought stress, LT of tolerant genotypes was on average 2.2°C lower than that of susceptible genotypes. The results are consistent with the tolerantsusceptible classification of these genotypes and indicate that these tools can be reliable in screening for drought tolerance, with F v /F m , SPAD index and LT having the added advantage of being nondestructive and easily and quickly assessed. Key words: chlorophyll a fluorescence, relative water content, leaf temperature, Saccharum, water deficit Uso de parâmetros fisiológicos como ferramentas rápidas para selecionar tolerância à seca em cana-de-açúcar: A seca é uma das maiores limitações à produtividade das plantas em todo o mundo. Identificar ferramentas satisfatórias de seleção e características quantitativas facilitaria o processo de melhoramento de uma cultura para tolerância à seca. No presente estudo, foi avaliada a adequação de quatro parâmetros fisiológicos (razão entre fluorescências variável e máxima da clorofila a, F v /F m ; estimativa do conteúdo de clorofila na folha via o índice SPAD; temperatura da folha, TF; e conteúdo relativo de água na folha, CRA) para distinguir entre genótipos de cana-de-açúcar tolerantes e suscetíveis submetidos a um ciclo de 90 dias de déficit hídrico. Foram avaliados oito genótipos, cultivados sob condições de campo. Aos 45 dias após o estabelecimento dos tratamentos, F v /F m , índice SPAD e CRA das plantas sob estresse declinaram significativamente em todos os genótipos, comparados aos respectivos controles sob condições ideais de irrigação. Entretanto, as reduções foram mais severas nas folhas dos genótipos suscetíveis à seca. Sob estresse hídrico, o grupo dos genótipos tolerantes manteve maiores valores de F v /F m (8%), ...

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“…On senescence, Ramesh (2000) reports reduction in the energy expenditure for the formation of leaves after 279 DAH in sugarcane, which can also lead to LAI reduction. The values observed in both ratoons were close to those reported by Machado et al (1985), who found LAI close to 4 (m² m -²), which is sufficient to intercept 95% of the incident solar radiation.…”

Section: Resultsmentioning

confidence: 99%

Development, yield and quality attributes of sugarcane cultivars fertigated by subsurface drip irrigation

Silva

Pires

Ribeiro

et al. 2016

Rev. bras. eng. agríc. ambient.

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The present study aimed to evaluate the development, yield and quality of four sugarcane cultivars fertigated by subsurface drip system. The experiment was carried out in Campinas-SP, Brazil, from January 2012 to November 2013, with the cultivars SP79-1011, IACSP94-2101, IACSP94-2094 and IACSP95-5000 subjected to daily irrigations. The irrigations depths were applied to bring soil moisture to field capacity. Soil moisture was monitored using soil moisture probes. Samples were collected along the crop cycle in order to evaluate crop development and yield, at the end of the first and second ratoons. Stalk height showed good correlation for the estimation of crop yield, with R2 equal to or higher than 0.96. The cultivar IACSP95-5000 showed the highest yield in the first ratoon. In the second ratoon the highest yield was observed in IACSP94-2101, followed by IACSP95-5000 and SP79-1011. Considering the yield results associated with the technological analysis, such as soluble solids content and apparent sucrose, the cultivar IACSP95-5000 excelled the others in the cultivation under subsurface drip irrigation.

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Sugarcane Breeding Institute, Coimbatore, India Effect of Different Levels of Drought during the Formative Phase on Growth Parameters and its Relationship with Dry Matter Accumulation in Sugarcane

Cited by 104 publications

References 4 publications

Sugarcane Response to Water-Deficit Stress during Early Growth on Organic and Sand Soils

Sugarcane Response to Water-Deficit Stress during Early Growth on Organic and Sand Soils

Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane

Development, yield and quality attributes of sugarcane cultivars fertigated by subsurface drip irrigation

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