Search

Start Over Subject mango

1. Differential responses of iron, magnesium, and zinc deficiency on pigment composition, nutrient content, and photosynthetic activity in tropical fruit crops

Creator:
Balakrishnan, K., Rajendran, C., and Kulandaivelu, G.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Achras, chlorophyll fluorescence, Citrus, Eugenia, Jamun, Mangifera, mango, nutrient deficiency, sapota, and sweet orange
Language:
Multiple languages
Description:
Fe, Mn, and Zn affected the chlorophyll (Chl) content whereas Fe deficiency caused larger reduction of total chlorophyll content than Mg and Zn deficiencies. Mg deficient mango had a higher Chl a/b ratio than the respective healthy plants. The foliar contents of Fe, Zn, and Mg in the deficient leaves were lower than the critical level. Nutrient deficiency significantly affected the Fv/Fm ratios as observed from the Chl fluorescence induction curves. Fe deficiency resulted in larger reduction of variable fluorescence than Mg and Zn deficiency. and K, Balakrishnan, C. Rajendran, G. Kulandaivelu.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Effect of elevation on photosynthesis of young mango (Mangifera indica L.) trees

Creator:
Wubshet, T.T., Wang, Z., Yang, J., Chen, H., Schaefer, D.A., Goldberg, S.D., Mortimer, P.E., Lu, P., and Xu, J.
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
cultivar, elevation, gas exchange, leaf nitrogen, mango, and photosynthesis
Language:
Multiple languages
Description:
Anticipating warming related to climate change, commercial mango plantations in China have been shifting from lower to higher elevations. Such a practice may expose mangoes to climatic conditions that could affect photosynthesis. Photosynthesis research on mango has previously examined mature plantations but exploring adequate functions before the time of fruit production is necessary for later crop success. Therefore, we established two main commercial mango cultivars, Tainong No. 1 and Jinhuang, at 450 m and 1,050 m and examined their photosynthetic performance. Our results showed that photosynthetic capacity parameters, including maximum photosynthetic rate, apparent quantum yield, maximum carboxylation rate, and photosynthetic electron transport rate, were significantly different between cultivars due to elevation and positively correlated with leaf nitrogen per area. Moreover, the seasonal gas exchange of the two cultivars showed variations due to elevation, particularly during the warmer seasons. Therefore, elevation affects the photosynthetic performance of these mango cultivars.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Improving photosynthetic performance and some fruit quality traits in mango trees by shading

Creator:
Jutamanee, K. and Onnom, S.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
chlorofyl, teplota, stín, chlorophyll, temperature, shade, kvalita ovoce, fluorescence chlorofylu, nadměrné ozařování, fotoinhibice, rychlost přenosu elektronů, mango, ozáření, fruit quality, chlorophyll fluorescence, excessive irradiation, net photosynthetic rate, photoinhibition, electron transport rate, irradiation, nonphotochemical quenching, peel color, photochemical quenching coefficient, 2, and 581
Language:
Multiple languages
Description:
Excess solar radiation under hot climate can lead to decline in photosynthetic activity with detrimental effects on growth and yield. The aim of this study was to evaluate the use of a transparent plastic roof as shading for diurnal changes in photosynthetic gas exchange, chlorophyll fluorescence, fruit set and quality of mango (Mangifera indica L.) cv. 'Nam Dok Mai' growth in the field conditions. Fully expanded leaves were examined either shaded by the plastic roof or sunlit under natural conditions. Leaf temperature and leaf-to-air vapour pressure deficit of the shaded leaves measured on the clear day were lowered compared to those of the sunlit leaves. It resulted in increased stomatal conductance and photosynthetic rates of the shaded leaves compared to those of the sunlit leaves, especially from the morning to midday. Furthermore, the reversible decrease of the maximal quantum yield of PSII was more pronounced in the sunlit leaves than that in the shaded ones. Shading increased the total fruit number; the shaded fruits developed better external color than that of the sun-exposed fruits. Our results indicated that shading could maintain the high photosynthetic activity by reducing stomatal limitations for carbon supply and was effective in alleviating the photoinhibitory damage to PSII during bright and clear days with excessive radiation. Finally, shading could increase the number of fruits and improve mango peel color., K. Jutamanee, S. Onnom., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public