Login | Request Account (DAF staff only)

Cool orchard temperatures or growing trees in containers can inhibit leaf gas exchange of avocado and mango

Share this record

Add to FacebookAdd to LinkedinAdd to XAdd to WechatAdd to Microsoft_teamsAdd to WhatsappAdd to Any

Export this record

View Altmetrics

Whiley, A. W., Searle, C., Schaffer, B. and Wolstenholme, B. N. (1999) Cool orchard temperatures or growing trees in containers can inhibit leaf gas exchange of avocado and mango. Journal of the American Society for Horticultural Science, 124 (1). pp. 46-51. ISSN 0003-1062; 2327-9788

[img]
Preview
PDF
52kB

Article Link: https://doi.org/10.21273/JASHS.124.1.46

Abstract

Leaf gas exchange of avocado (Persea americana Mill.) and mango (Mangifera indica L.) trees in containers and in an orchard (field-grown trees) was measured over a range of photosynthetic photon fluxes (PPF) and ambient CO2 concentrations (C(a)). Net CO2 assimilation (A) and intercellular partial pressure of CO2 (Ci) were determined for all trees in early autumn (noncold-stressed leaves) when minimum daily temperatures were ≥14 °C, and for field-grown trees in winter (cold-stressed leaves) when minimum daily temperatures were ≤10 °C. Cold-stressed trees of both species had lower maximum CO2 assimilation rates (A(max)), light saturation points (Q(A)), CO2 saturation points (C(aSAT)) and quantum yields than leaves of noncold-stressed, field-grown trees. The ratio of variable to maximum fluorescence (F(v)/F(m)) was ≃50 % lower for leaves of cold-stressed, field-grown trees than for leaves of nonstressed, field-grown trees, indicating chill-induced photoinhibition of leaves had occurred in winter. The data indicate that chill-induced photoinhibition of A and/or sink limitations caused by root restriction in container-grown trees can limit carbon assimilation in avocado and mango trees.

Item Type:Article
Subjects:Plant culture > Tree crops
Plant culture > Fruit and fruit culture > Culture of individual fruits or types of fruit
Live Archive:13 Mar 2024 02:08
Last Modified:13 Mar 2024 02:08

Repository Staff Only: item control page

Downloads

Downloads per month over past year

View more statistics