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Titolo:
PATTERNS OF GENOTYPIC VARIATION AND PHENOTYPIC PLASTICITY OF LIGHT RESPONSE IN 2 TROPICAL PIPER (PIPERACEAE) SPECIES
Autore:
NICOTRA AB; CHAZDON RL; SCHLICHTING CD;
Indirizzi:
UNIV CONNECTICUT,DEPT ECOL & EVOLUTIONARY BIOL STORRS CT 06269 UNIV CONNECTICUT,DEPT ECOL & EVOLUTIONARY BIOL STORRS CT 06269
Titolo Testata:
American journal of botany
fascicolo: 11, volume: 84, anno: 1997,
pagine: 1542 - 1552
SICI:
0002-9122(1997)84:11<1542:POGVAP>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHLOX-DRUMMONDII POLEMONIACEAE; RAIN-FOREST SHRUBS; ECOTYPIC DIFFERENTIATION; PHOTOSYNTHETIC CAPACITY; POLYGONUM-PERSICARIA; REACTION NORMS; LEAF ANATOMY; GAS-EXCHANGE; INTEGRATION; ACCLIMATION;
Keywords:
GENETIC VARIATION; LIGHT ACCLIMATION; PHENOTYPIC PLASTICITY; PIPER; PIPERACEAE; REACTION NORM; TRAIT CORRELATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
46
Recensione:
Indirizzi per estratti:
Citazione:
A.B. Nicotra et al., "PATTERNS OF GENOTYPIC VARIATION AND PHENOTYPIC PLASTICITY OF LIGHT RESPONSE IN 2 TROPICAL PIPER (PIPERACEAE) SPECIES", American journal of botany, 84(11), 1997, pp. 1542-1552

Abstract

Patterns of phenotypic plasticity and genotypic variation in light response of growth and photosynthesis were examined in two species of rain forest shrub that differ in ecological distribution within the forest. We further examined correlations among photosynthetic and growth traits. We hypothesized that the pioneer species, Piper sancti-felicis,would display greater phenotypic plasticity than the shade-tolerant species, Piper arieiamum. We further proposed that, in both species, genotypic effects would be more apparent ill growth-related traits than photosynthetic traits due to more concentrated selection pressure on gas-exchange traits. P. sancti-felicis did not demonstrate greater phenotypic plasticity of Light response. Although many of the traits measured had significant genotype effects, neither species showed any significant effects of genotype on light response of photosynthesis, suggesting little genetic variation for this trait within populations. A principal components analysis clearly illustrated both species and light effects, with the treatments dividing nearly along the axis of the first principal component and the species separating along the second principal component avis. Results indicated general similarities between the species in their trait correlation structure and level of integration among traits, bur characteristic differences were observed in the patterns of change between Low and high light. Both species had more correlations than expected within groups of growth-related or photosynthetic traits; strong correlations of traits between these two groups were underrepresented. The similar pattern of genetic variation and phenotypic integration observed in these two congeners may be due more totheir close phylogenetic relation than to their ecological distributions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 11:05:28