Limitations of Blackman's Law of Limiting Factors and Harder's Concept of Relative Minimum as Applied to Photosynthesis

Singh, B. N.; Lal, K. N.

doi:10.1104/pp.10.2.245

Cited by 27 publications

(3 citation statements)

References 9 publications

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“…Theoretical discussions of the relation of the rate of photosynthesis to the concentration of carbon Blackman (1905), Bose (1924), Lundegardh (1921), Singh and Lal (1935), and Harder (1921). Blackman and Smith (1911) found continued increase in the rat~ of photosynthesis with increasing carbon dioxide concentration until the latter reached a value as high as 400 x l0-5 mole per liter.…”

Section: Relationship Of Primary Production Tomentioning

confidence: 99%

Laboratory Studies of Periphyton Production and Community Metabolism in Lotic Environments

McIntire¹,

Phinney²

1965

Ecological Monographs

152

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Section: Relationship Of Primary Production Tomentioning

confidence: 99%

Laboratory Studies of Periphyton Production and Community Metabolism in Lotic Environments

McIntire¹,

Phinney²

1965

Ecological Monographs

152

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“…The temperatures prevailing at the three harvest times, viz., December, February and April and during the post-harvest storage peirod of 240 h (10 days) ( The optimum temperatures for carbon assimilation (Singh and Lal, 1935) and sucrose synthesis by the excised leaf laminae of sugarcane are 30 o C (Hartt, 1940). For translocation of sucrose, it is between 30-33 o C (Julien et al, 1989).…”

Section: Temperature Patternmentioning

confidence: 99%

Post-harvest decline in commerical cane sugar and its relationship with quality parameters in sugarcane under sub-tropical climate

et al. 2009

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One of the major reasons for low sugar recovery in Indian sub tropics is inordinate delay between harvesting and milling. The effect of staling duration, during various temperatures regimes of cane harvest, on juice quality and other related biochemical attributes in two commercial sugarcane varieties under sub tropical climate were investigated. It was aimed to work out a relationship of commercial cane sugar (CCS) with other quality parameters. Barring dextran and total phenol content most of the parameters studied in the varieties were non-significant. Time of harvest i.e. December through April. induced significant variations in most of the parameters studied except for extraction %, pH and total phenols. Duration of staling also caused significant variations in almost all the parameters studied. Significant higher alterations in juice parameters from freshly harvested and stale canes were noticed in April due to relatively higher ambient temperatures. In essence, decline in CCS with staling duration in both the varieties, extraction per cent, sucrose % juice and purity coefficient were highly significant and positively correlated, whereas loss in cane weight, reducing sugars, dextran contents and acid invertase activity were negatively correlated (at 1 % P). Thus both of these parameters i.e. sucrose % juice and reducing sugars could be utilized to predict the loss in commercial cane sugar during post-harvest deteroration of sugarcane.

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“…Plantas com metabolismo do tipo C4 apresentam taxa de fotossíntese máxima ao redor de 30-35°C (SINGH & LAL, 1935;EL-SHARKAWY &HESKETH, 1964;HOFSTRA &HESKETH, 1969;DOWNTON, 1971;LAAR&PENNING de VRIES, 1972;BIRD et alii, 1977), decrescendo rapidamente abaixo de 20°C. GLOVER (1974) revela que, em cana-de-açúcar, a taxa de fotossíntese apresenta um Q 10 ao redor de dois entre 15 e 30°C.…”

Section: Fator Idade Da Cultura (Fidade) -Segundo Váriosautores(harttunclassified

Um simulador dinâmico do crescimento de uma cultura de cana-de-açúcar

Pereira

Machado

1986

Bragantia

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RESUMOEste trabalho descreve a primeira versão de um simulador matemático-fisiológico do crescimento diário de uma cultura de cana-de-açúcar (SIMCANA) em resposta às condições do ambiente durante a estação de crescimento. SIMCANA resume a maior parte das informações disponíveis concernentes aos processos fisiológicos da cultura de cana-de-açúcar. Esta sua versão não inclui os processos deigerminaçâo e florescimento, havendo necessidade de especificar as condições da cultura no primeiro dia de simulação. Em função das condições diárias de radiação solar global, temperatura máxima e mínima, umidade relativa do ar, SIMCANA calcula as taxas de fotossíntese, respiração e crescimento da cultura, as taxas de senescência das folhas e raízes, a massa seca das folhas, colmos e raízes, e o índice de área foliar. Embora várias relações empíricas tenham sido usadas, SIMCANA parece ser capaz de simular o crescimento da cultura de cana-de-açúcar.

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Limitations of Blackman's Law of Limiting Factors and Harder's Concept of Relative Minimum as Applied to Photosynthesis

Abstract: With the formulation of LIEBIG'S law of the minimum (7) and with the advance in our knowledge of the subject of photosynthesis, it came to be realized that the process is conditioned by numerous factors. PFEFFER (12) and PANTANELLI (13)

Cited by 27 publications

References 9 publications

Laboratory Studies of Periphyton Production and Community Metabolism in Lotic Environments

Laboratory Studies of Periphyton Production and Community Metabolism in Lotic Environments

Post-harvest decline in commerical cane sugar and its relationship with quality parameters in sugarcane under sub-tropical climate

Um simulador dinâmico do crescimento de uma cultura de cana-de-açúcar

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