Effect of prohexadione-Ca on leaf chlorophyll content, gas exchange, berry size and composition, wine quality and disease susceptibility in Vitis vinifera L. cv Xinomavro

2018 ◽  
Vol 238 ◽  
pp. 369-374 ◽  
Author(s):  
Thomas Thomidis ◽  
Eleftheria Zioziou ◽  
Stefanos Koundouras ◽  
Ioannis Navrozidis ◽  
Nikolaos Nikolaou
Keyword(s):  
Gas Exchange ◽  
Vitis Vinifera ◽  
Chlorophyll Content ◽  
Disease Susceptibility ◽  
Vitis Vinifera L ◽  
Wine Quality ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll ◽  
Berry Size

Seasonal changes in net carbon dioxide exchange rates of Autumn Bliss, a primocane-fruiting red raspberry (Rubus idaeus L.)

1997 ◽  
Vol 77 (3) ◽  
pp. 427-431 ◽  
Author(s):  
Jean-Pierre Privé ◽  
J. A. Sullivan ◽  
J. T. A. Proctor
Keyword(s):  
Gas Exchange ◽  
Chlorophyll Content ◽  
Seasonal Changes ◽  
Leaf Gas Exchange ◽  
Leaf Age ◽  
Rubus Idaeus ◽  
Carbon Dioxide Exchange ◽  
Red Raspberry ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll

Seasonal changes in leaf net carbon exchange rate (NCER), stomatal conductance (gs), and intercellular CO2 (ci) were determined for 2-yr-old potted Autumn Bliss (Rubus idaeus L.) plants grown under field conditions. NCER varied inconsistently between leaves which subtended fruiting lateral branches (laterals) and those that did not. In leaves with fruiting laterals, it was lower on three dates, similar on three other dates and once greater than in leaves without fruiting laterals. Evidence of nonstomatal inhibition of photosynthesis was also apparent as leaf NCER and gs fluctuated during the season while ci remained relatively constant. The leaf chlorophyll content increased when fruiting laterals were present, but this did not produce a consistently higher leaf NCER. The SPAD-501 meter provided a rapid and accurate, nondestructive estimate of leaf chlorophyll content for Autumn Bliss red raspberry leaves. Under uniform environmental conditions, all healthy, fully expanded leaves along the primocane had the same photosynthetic potential. Also, leaf age did not influence leaf gas exchange until the leaves started to senesce. Therefore, good light interception throughout the canopy is needed to optimize dry matter production in primocane-fruiting red raspberries. Key words: Rubus idaeus L., primocane-fruiting, leaf gas exchange

scholarly journals Gas Exchange and Chlorophyll Content of `Tifblue' Rabbiteye and `Sharpblue' Southern Highbush Blueberry Exposed to Salinity and Supplemental Calcium

1993 ◽  
Vol 118 (4) ◽  
pp. 456-463 ◽  
Author(s):  
Glenn C. Wright ◽  
Kim D. Patten ◽  
Malcolm C. Drew
Keyword(s):  
Stomatal Conductance ◽  
Gas Exchange ◽  
Chlorophyll Content ◽  
Sand Culture ◽  
Highbush Blueberry ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll ◽  
Leaf Necrosis ◽  
Net Assimilation ◽  
Southern Highbush

`Tifblue' rabbiteye blueberry (Vaccinium ashei Reade) and `Sharpblue' southern highbush blueberry (primarily V. corymbosum) were treated with 0, 25, or 100 Mm Na+ as Na2SO4 or NaC1, and 0, 1, 3, or 10 Mm supplemental Ca2+ in sand culture in the greenhouse. Greatest stomatal conductance (gs) and net assimilation (A) occurred in unsalinized `Tifblue' plants not given additional Ca2+. Stomatal conductance, A, transpiration (E), and xylem water potential(Ψ)of `Tifblue' and `Sharpblue' plants were all lowered as salinity increased, and these effects were more pronounced with NaCl than with Na2SO4. After 63 days, for plants given 100 Mm Na+ as NaCl, gs and net assimilation rate were reduced to only 10% of the unsalinized controls, while for plants salinized with 100 mm Na+ as Na2SO4, gs and A were 35% and 43%, respectively, of unsalinized controls. Leaf necrosis was more extensive on `Sharpblue' plants given NaCl than on `Tifblue' plants. Neither Ca2+ nor Na+ treatments led to severe chlorosis; reductions in leaf chlorophyll content were mainly due to necrosis. The Na+- induced reduction in gas exchange was associated with negative Ψw Ca2+ deficiency, or a combination of these factors. Additional factors leading to inhibition of gas exchange in NaCl- stressed plants include Cl- toxicity and leaf necrosis. Calcium supplements were unable to ameliorate NaCl damage in `Tifblue' or `Sharpblue' plants, possibly because of the inability of Ca2+ to counter Cl- entry and toxicity. In contrast, additional Ca2+ improved gs, A, Ψw, and leaf chlorophyll content of `Tifblue' plants that received Na2SO4. For plants treated with 25 mm Na+ as Na2SO4 and 1 mm Ca2+, gs was 1.5 to 2.5 times higher than in plants without added Ca2+. Low (1 mm) concentrations of Ca2+ were more effective in ameliorating the effects of 100 mm Na+ as Na2SO4. than were 3 or 10 mm Ca2+ supplements, possibly because higher Ca2+ concentrations damaged the metabolism of the calcifuge blueberry.

scholarly journals Influence of natural variation in berry size on the volatile profiles of Vitis vinifera L. cv. Merlot and Cabernet Gernischt grapes

PLoS ONE ◽  
2018 ◽  
Vol 13 (9) ◽  
pp. e0201374 ◽  
Author(s):  
Sha Xie ◽  
Yonghong Tang ◽  
Peng Wang ◽  
Changzheng Song ◽  
Bingbing Duan ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Natural Variation ◽  
Vitis Vinifera L ◽  
Berry Size ◽  
Volatile Profiles

scholarly journals RIL-StEp: epistasis analysis of rice recombinant inbred lines (RILs) reveals candidate interacting genes that control seed hull color and leaf chlorophyll content

2021 ◽  
Author(s):  
Toshiyuki Sakai ◽  
Akira Abe ◽  
Motoki Shimizu ◽  
Ryohei Terauchi
Keyword(s):  
Chlorophyll Content ◽  
Recombinant Inbred ◽  
Complex Traits ◽  
Genetic Architecture ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Gene Interactions ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll ◽  
Seed Hull

Abstract Characterizing epistatic gene interactions is fundamental for understanding the genetic architecture of complex traits. However, due to the large number of potential gene combinations, detecting epistatic gene interactions is computationally demanding. A simple, easy-to-perform method for sensitive detection of epistasis is required. Due to their homozygous nature, use of recombinant inbred lines (RILs) excludes the dominance effect of alleles and interactions involving heterozygous genotypes, thereby allowing detection of epistasis in a simple and interpretable model. Here, we present an approach called RIL-StEp (recombinant inbred lines stepwise epistasis detection) to detect epistasis using single nucleotide polymorphisms in the genome. We applied the method to reveal epistasis affecting rice (Oryza sativa) seed hull color and leaf chlorophyll content and successfully identified pairs of genomic regions that presumably control these phenotypes. This method has the potential to improve our understanding of the genetic architecture of various traits of crops and other organisms.

Variability of Leaf Chlorophyll Content in a Population of Sassafras

1990 ◽  
Vol 117 (2) ◽  
pp. 167 ◽  
Author(s):  
Amrita G. de Soyza ◽  
Dwight T. Kincaid ◽  
Carlos R. Ramirez
Keyword(s):  
Chlorophyll Content ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll
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