The effect of genotype, environment and time of harvest on sugarcane yields in Florida, USA

Gilbert, Robert A.; Shine, James M.; Miller, J. D.; Rice, Ronald W.; Rainbolt, Curtis

doi:10.1016/j.fcr.2005.02.006

Cited by 86 publications

(65 citation statements)

References 24 publications

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“…A AFoEM e AFoTot foram medidas utilizando um integrador de área foliar de mesa (Modelo LAI 3000, LI-COR Inc., Lincoln, NE). Adicionalmente, foram obtidos as massas frescas e secas dos colmos dos perfilhos amostrados, conforme descrito por Gilbert et al (2006) ) foi obtido invertendo-se o valor da taxa de aparecimento foliar (SINCLAIR et al, 2004). Uma relação também foi estabelecida entre os valores de AFo+3 e a sua posição nos colmos (PFC).…”

Section: Methodsunclassified

“…O rendimento médio da cana-de-açúcar é em torno de 91,2 t ha -1 , superior ao rendimento médio estadual (58,7 t ha Em decorrência, o levantamento de informações sobre o desenvolvimento da parte aérea da cana-de-açúcar torna-se de grande importância, logo que permite inferir a influência de fatores abióticos (adubação, irrigação, data de início do ciclo, clima, solo, variedade, tipo de ciclo: cana-planta ou canasoca, entre outros) ou bióticos (doenças, pragas, entre outros) no rendimento final da cultura (GILBERT et al, 2006;PARK et al, 2005;SINGH et al, 2007;SMIT;SINGLES, 2006;). Além disso, as variáveis monitoradas, a partir de estudos de análise biométrica, podem ser utilizadas em modelos de simulação, a fim de se descrever o crescimento e quantificar o rendimento da cana-de-açúcar submetida a diversas condições de cultivo (KNOX et al, 2010;LISSON et al, 2005).…”

Section: Introductionunclassified

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Biometria da parte aérea da cana soca irrigada no Submédio do Vale do São Francisco

et al. 2012

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Biometria da parte aérea da cana soca irrigada no Submédio do Vale do São Francisco). O tombamento da cana-de-açúcar afeta a dinâmica da estatura dos colmos, a qual atingiu valor final de 421 ± 22 cm. Porém, não demonstrou impactos diretos sobre os padrões de comprimento (13,6 ± 2,4 cm), diâmetro (2,5 ± 0,2 cm) e volume dos internódios (68,8 ± 19,5 , no Intervalo II. A área máxima da folha (423 ± 39 cm 2 ) depende da sua posição no colmo (n o 15) e responde, principalmente, ao comprimento foliar (máximo valor de 146 ± 6 cm), logo que a largura máxima (~4,2 ± 0,2 cm) tende a se estabilizar ao longo do ciclo. O índice de área foliar apresentou uma correlação positiva com o número de folhas verdes abertas e com a área das folhas.Palavras-chave: Biometria. Filocrono. RB92579. Tombamento. ABSTRACT -The productivity of sugarcane in the Submedio of the Vale do São Francisco has been presenting superior performance due to the use of irrigation. In this way, information regarding the crop growth can be used for improving crop management. Thus, the objective of this work was to carry out a biometrics analysis of the irrigated sugarcane, seeking to supply the absence of information of this crop in the region. The experiment was conducted in the district of Juazeiro-BA using the variety RB92579 during the ratoon cycle. Two types of biometrics analysis were performed, one of them was destructive, where plants were sampled and conducted at the laboratory, and another one was no destructive, in which the variables are monitored in field. Based on the results, it was possible to verify that the crop presented high tillering (15.2 shoot m -2

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Section: Methodsunclassified

Section: Introductionunclassified

Biometria da parte aérea da cana soca irrigada no Submédio do Vale do São Francisco

et al. 2012

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“…Identification of such high yielding accession is important for cultivation and production of bacoside A. The variation in the biomass and HI has been reported earlier in many crops (Gilbert et al 2006;White and Wilson 2006;Pilbeam 1996;Scully and Wallace 1990). These authors reported that increase in harvest index is due to the increase in biomass of the plant.…”

Section: Resultsmentioning

confidence: 80%

Seasonal variations in harvest index and bacoside A contents amongst accessions of Bacopa monnieri (L.) Wettst. collected from wild populations

Bansal

Reddy

Kumar

2016

Physiol Mol Biol Plants

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Bacoside A, a major active principle of Bacopa monnieri known for its cognitive effects is a mixture of saponins like bacoside A3, bacopaside II, isomer of bacopasaponin C and bacopasaponin C. Seasonal changes in biomass and bacoside A levels in fourteen accessions of B. monnieri were evaluated after maintaining these at a common site at Thapar University campus, Patiala (30°19 0 36.12 00 N and 76°24 0 1.08 00 E) for 1 year. Harvestable biomass and total bacoside A contents varied significantly between the accessions and also in a particular accession during different seasons of the year. The maximum dry weight of plant (biomass 1.64 g) and bacoside A levels (6.82 mg/plant) were recorded in accession BM1. Harvestable biomass was highest during summer in accessions BM1 and BM7 (FW 4.2 g/plant), whereas bacoside A levels were also highest during summer and in accession BM1 (6.82 mg/plant). The lowest bacoside A level (0.06 mg/plant) was recorded in accession BM14 during winter. Principal component analysis showed that samples of summer were positively correlated with both the components suggesting an appropriate time for the harvest.

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“…During this stage, thousands of heterozygous individuals from hybridizations between previously selected parents are produced (Gilbert et al, 2006). Selection of families may be preferable during this stage when it is carried out based on low individual heritability.…”

Section: Resultsmentioning

confidence: 99%

Selection of sugar cane full-sib families using mixed models and ISSR markers

Almeida¹,

Viana²,

Gonçalves³

et al. 2014

Genet. Mol. Res.

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ABSTRACT. In 2006, an experiment examining families belonging to the first selection stage of the Sugar Cane Breeding Program of Universidade Federal Rural do Rio de Janeiro/Rede Interuniversitária para o Desenvolvimento do Setor Sucroalcooleiro was conducted. Families and plants within families were evaluated to select superior plants for subsequent stages of the breeding program. The experiment was arranged in a randomized block design, in which progenies were grouped into 4 sets, each with 4 replicates and 100 seedlings per plot. The following traits were evaluated: average stem diameter, total plot weight, number of stems, Brix of the lower stem, and Brix of the upper stem. The study of families used the restricted maximum likelihood/best linear unbiased procedure mixed models. After selection, families were genotyped via inter-simple sequence repeat to assess the genetic distance of genotypes. This approach was found to be efficient for selecting new genotypes.

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The effect of genotype, environment and time of harvest on sugarcane yields in Florida, USA

Cited by 86 publications

References 24 publications

Biometria da parte aérea da cana soca irrigada no Submédio do Vale do São Francisco

Biometria da parte aérea da cana soca irrigada no Submédio do Vale do São Francisco

Seasonal variations in harvest index and bacoside A contents amongst accessions of Bacopa monnieri (L.) Wettst. collected from wild populations

Selection of sugar cane full-sib families using mixed models and ISSR markers

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