Influence of Root System Restriction on Physiological Characteristics of Four Papaya Genotypes

Campostrini, Eliemar; Yamanishi, Osvaldo Kiyoshi

doi:10.1007/978-94-011-3953-3_890

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…The values of F ranged from 0.033 to 0.042 mol CO 2 mol − 1 quanta, and G I from 6 to 20 mmol m − 2 s − 1 in the Fagus syl6atica leaves, depending on the growing season (Stickan and Zhang 1992), which agrees with the present data for Karwinskia species (Tables 3 and 4). Similar values of quantum yield were also determined for Carica papaya [0.034 mol CO 2 mol − 1 quanta (Campostrini and Yamanishi 1999)], or in general for C 3 species (Ehleringer and Pearcy 1983). Gloser et al (1999) found that at low N treatment, P N decreased by about 50% and quantum yield by 20 -25%.…”

Section: Discussionsupporting

confidence: 77%

Photosynthesis, biomass partitioning and peroxisomicine A₁ production of Karwinskia species in response to nitrogen supply

Masarovičová

Welschen

Lee

et al. 2000

Physiologia Plantarum

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Species of the genus Karwinskia are medicinal woody plants producing secondary metabolites (anthracenones, peroxisomicine A1) with antitumour effects. We investigated the photosynthetic and growth characteristics of Karwinskia parvifolia Zucc. and Karwinskia humboldtiana Rose plants grown at two rates of nitrogen supply. There were significant differences in growth, CO2 exchange (photosynthesis, respiration), chlorophyll and nitrogen concentration between plants grown at high nitrogen supply (HN) and low nitrogen supply (LN). At HN, the plants of both species grew faster than those cultivated at LN. Rates of photosynthesis, leaf respiration and root respiration, quantum yield, the concentration of chlorophylls (a, b, a+b), specific leaf area, leaf mass ratio and peroxisomicine A1 concentration were higher in plants grown at HN. The species‐specific difference in the daily carbon budget was mainly due to variation in rates of carbon fixation. K. parvifolia responded more strongly to the nitrogen treatment than K. humboldtiana, in terms of growth, as well as with respect to photosynthesis and peroxisomicine A1 concentration.

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Section: Discussionsupporting

confidence: 77%

Photosynthesis, biomass partitioning and peroxisomicine A₁ production of Karwinskia species in response to nitrogen supply

Masarovičová

Welschen

Lee

et al. 2000

Physiologia Plantarum

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“…In studies Campostrini and Yamanishi, 2001) evaluating cultivar adaptation to soil compaction and root restriction, all cultivars had reduced total leaf number, average leaf area, length of leaf central vein, total leaf area, trunk diameter and tree height compared to nonrestricted plants. Campostrini et al (1998) concluded that rooting volume restriction induced senescence as a general physiological response.…”

Section: Soil Compaction and Root Restriction Effects On Papaya Physimentioning

confidence: 99%

Ecophysiology of papaya: a review

Campostrini

Glenn

2007

Braz. J. Plant Physiol.

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Papaya (Carica papaya L.) is a principal horticultural crop of tropical and subtropical regions. Knowledge of how papaya responds to environmental factors provides a scientific basis for the development of management strategies to optimize fruit yield and quality. A better understanding of genotypic responses to specific environmental factors will contribute to efficient agricultural zoning and papaya breeding programs. The objective of this review is to present current research knowledge related to the effect of environmental factors and their interaction with the photosynthetic process and whole-plant physiology. This review demonstrates that environmental factors such as light, wind, soil chemical and physical characteristics, temperature, soil water, relative humidity, and biotic factors such as mycorrhizal fungi and genotype profoundly affect the productivity and physiology of papaya. An understanding of the environmental factors and their interaction with physiological processes is extremely important for economically sustainable production in the nursery or in the field. With improved, science-based management, growers will optimize photosynthetic carbon assimilation and increase papaya fruit productivity and quality. Key words: Carica papaya, environmental factors, photosynthesis, water relations, water-use efficiency Ecofisiologia do mamoeiro: uma revisão: O mamoeiro (Carica papaya L.) é uma das principais culturas das regiões tropicais e subtropicais. O conhecimento das respostas dessa cultura aos fatores do ambiente pode fornecer bases científicas para traçarem-se estratégias de manejo que possam otimizar a produção e a qualidade dos frutos. Um melhor entendimento das respostas dos genótipos aos fatores específicos do ambiente poderá contribuir para um eficiente zoneamento agrícola e para futuros programas de melhoramento da espécie. Objetivou-se apresentar o estado-da-arte do conhecimento relacionado aos efeitos e à interação dos fatores ambientes sobre o processo fotossintético e a fisiologia da planta inteira. Nesta revisão, demonstra-se que os fatores do ambiente, como luz, vento, característica físicas e químicas do solo, temperatura, água no solo, umidade relativa, além de fatores bióticos, como fungos micorrízicos e o genótipo, podem afetar intensamente a produtividade e a fisiologia do mamoeiro. Uma compreensão da ação dos fatores do ambiente e suas interações com o processo fisiológico dessa espécie são de grande importância para a sustentabilidade econômica da produção do mamoeiro, em condições de viveiro e de campo. A partir de um manejo da cultura baseado em resultados científicos, será possível otimizar a assimilação fotossintética do carbono e elevar a qualidade e produção de frutos do mamoeiro. Palavras-chave: Carica papaya, eficiência do uso da água, fatores ambientes, fotossíntese, relações hídricas

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“…Kandungan sitokinin yang cukup banyak dapat merangsang sitokinesis pada sel primordia daun sehingga dapat mendukung peningkatan jumlah daun (Asra et al, 2020). Hormon giberelin dan sitokinin diproduksi pada akar tanaman pepaya (Campostrini & Yamanishi, 1998).…”

Section: Parameter DI Atas Permukaan Tanahunclassified

Efektivitas Esktrak Akar Kenikir (Cosmos caudatus Kunth) dan Pepaya (Carica papaya L) dalam Menekan Terbentuknya Puru Akar Nematoda pada Tanaman Seledri (Apium graveolensL)

Asty,

Siahaya,

Umasangaji

2023

JASPT

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This study aims to test the effectiveness of root extracts of kenikir and papaya plants in suppressing the rate of root-knots formation, as well as the number of root-knots formed on celery plants. The method used was a factorial experiment in a randomized block design with two factors, namely the type of antagonist plant root and the dosage, with five replications. The results showed that the treatment of papaya root extract (Carica papaya L.) had a significant effect on all parameters, but the HSD test was only significantly different on the number of root knots. The highest average number of root knots in control plants was 67.2 (A1B0), and the lowest was 4.6 (A1B5). The treatment of kenikir root extract (Cosmos caudatus Kunth.) significantly affected all parameters, but the HSD test was only significantly different on plant height and number of root knots. The average plant height in the control was 31.4 cm (A2B0), and in the treatment 40.6 cm (A2B5). The highest average number of root knoots was 50.8 (A2B0), and the lowest was 1.0 (A2B5). Carpain secondary metabolites in papaya root extract, and phenylpropanoids in kenikir root extract played a role in suppressing the growth of root-knot nematodes. Coniferyl alcohol in kenikir root extract is thought to play a role in increasing the height of celery plants. Kenikir root extract was better than papaya root extract in suppressing the growth of root-knot nematodes.

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Influence of Root System Restriction on Physiological Characteristics of Four Papaya Genotypes

Cited by 3 publications

References 16 publications

Photosynthesis, biomass partitioning and peroxisomicine A₁ production of Karwinskia species in response to nitrogen supply

Photosynthesis, biomass partitioning and peroxisomicine A₁ production of Karwinskia species in response to nitrogen supply

Ecophysiology of papaya: a review

Efektivitas Esktrak Akar Kenikir (Cosmos caudatus Kunth) dan Pepaya (Carica papaya L) dalam Menekan Terbentuknya Puru Akar Nematoda pada Tanaman Seledri (Apium graveolensL)

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Influence of Root System Restriction on Physiological Characteristics of Four Papaya Genotypes

Cited by 3 publications

References 16 publications

Photosynthesis, biomass partitioning and peroxisomicine A1 production of Karwinskia species in response to nitrogen supply

Photosynthesis, biomass partitioning and peroxisomicine A1 production of Karwinskia species in response to nitrogen supply

Ecophysiology of papaya: a review

Efektivitas Esktrak Akar Kenikir (Cosmos caudatus Kunth) dan Pepaya (Carica papaya L) dalam Menekan Terbentuknya Puru Akar Nematoda pada Tanaman Seledri (Apium graveolensL)

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Photosynthesis, biomass partitioning and peroxisomicine A₁ production of Karwinskia species in response to nitrogen supply

Photosynthesis, biomass partitioning and peroxisomicine A₁ production of Karwinskia species in response to nitrogen supply