المستودع الأكاديمي جامعة المدينة

LEAF GAS EXCHANGE CHARACTERISTICS OF FOUR PAPAYA GENOTYPES DURING DIFFERENT STAGES OF DEVELOPMENT

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dc.creator CAMPOSTRINI ELIEMAR
dc.creator YAMANISHI OSVALDO KIYOSHI
dc.creator MARTINEZ CARLOS A.
dc.date 2001
dc.date.accessioned 2013-06-01T10:50:28Z
dc.date.available 2013-06-01T10:50:28Z
dc.date.issued 2013-06-01
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452001000300014
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01002945&date=2001&volume=23&issue=3&spage=522
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/8319
dc.description In this research, was used four papaya (Carica papaya L.) genotypes: three from the 'Solo ( Sunrise Solo TJ, Sunrise Solo 72/12 and Baixinho de Santa Amália) group and one from the 'Formosa' group (Know-You 01). They were grown in plastic pots containing a sandy-clay-loam soil subjected to pH correction and fertilization, under greenhouse conditions. Throughout the experimental period plants were subjected to periodic irrigation to maintain the soil humitidy around field capacity. The experiment was conducted 73 days after sowing. In all genotypes, leaf gas exchange characteristics were determined. The net photosynthetic rate (A, mumol m-2 s-1 ), stomatal conductance (g s mol m-2 s-1), leaf temperature (T I, 0C) and intercellular carbon dioxide concentration (ci, muL L-1) on the 4th, 5th, 6th, 7th, 8th and 9th leaves from the plant apex were determined. No significant differences were observed for A, g s, c i, or Tl either among the leaves sampled from any of the genotypes. A was positively correlated with g s and in the other hand T I and g s were negatively correlated. The results suggest that, for 73 DAP, all the sampled papaya leaves functioned as sources of organs.
dc.publisher Sociedade Brasileira de Fruticultura
dc.source Revista Brasileira de Fruticultura
dc.subject photosynthesis
dc.subject Carica papaya
dc.subject stomatal conductance
dc.subject leaf temperature
dc.title LEAF GAS EXCHANGE CHARACTERISTICS OF FOUR PAPAYA GENOTYPES DURING DIFFERENT STAGES OF DEVELOPMENT


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