Effect of foliar spraying with algae suspension on leaf and fruit quality parameters of apple varieties

Foliar nutrition experiment was made to investigate the effect of algae products on fruit quality of apples (Malus domestica Borkh.). The study was conducted in 2011 at Siófok inWest-Hungary on cv. ‘Jonagored’ and ‘Idared’grafted on M9 rootstock. In our trial leaf diagnostic and fruit quality measurements were made to study the effectiveness of applied products. Relative leaf chlorophyll content was determined by a portable chlorophyll meter. Fruit weight and shape index were measured. Fruit inner qualifying parameters like titratable acid content and Brix value were also determined. It can be stated that the used products had traceable effect on investigated fruit parameters. Although, leaf N content was not effected by treatments significantly, relative leaf chlorophyll content significantly increased by both treatments. Used products significantly increased the fruit weight and shape index. Applied treatments significantly decreased the pH of pulp. Treatments increased the acid contents (fumaric, citric, malic) of apples and decreased the amount of monosaccharides. It means that the applied treatments pushed out the ratio of acid/sugar.

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Genetic association and path coefficient analysis among yield and nutritional traits of tomato (Lycopersicon esculentum L.)

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v17i2.41942 ◽

2019 ◽

Vol 17 (2) ◽

pp. 187-193

Author(s):

Shaila Sharmin ◽

Afsana Hannan ◽

Md Tahjib-Ul- Arif ◽

G H M Sagor

Keyword(s):

Chlorophyll Content ◽

Total Phenolic Content ◽

Phenolic Content ◽

Fruit Weight ◽

Total Phenolic ◽

Leaf Chlorophyll Content ◽

Leaf Chlorophyll ◽

Soluble Solid ◽

Positive Direct ◽

Fruit Diameter

The present study was conducted following randomized complete block design with three replications to evaluate the genetic variability of twenty five tomato genotypes for yield and nutritional traits and also their attributing factors. A wide range of variation was observed among the characters studied which have a great interest for tomato breeders. Heritability in broad and narrow sense for soluble solid in green and red tomato, total phenolic content, fruit diameter and seed/fruit was 93.23%, 98.58%, 99.92%, 99.37% and 96.15% respectively and for those traits, phenotypic influence was negligible. Leaf chlorophyll content and total phenolic content showed positive significant correlation with soluble solid (sugar) whereas pH showed negative correlation. Yield/plant was found highly significant and positively correlated with individual fruit weight, fruit diameter, seed/fruit, and plant height whereas soluble solid, leaf chlorophyll content, total phenolic content showed negative correlation. Path analysis revealed that soluble solid had positive direct effect with leaf chlorophyll content, pH of fruit juice and days to first flowering and negative direct effects with individual fruit weight, fruit diameter, plant height, fruit /bunch, whereas yield/plant showed positive direct effects with all above traits except soluble solids in red tomato, which clearly indicate inverse correlation between yield and nutritional components of tomato fruit. Further, principal component analysis found that four principal components contributed 75.1% of the total variability. Individual fruit weight, days to first flowering, pH of fruit juice, fruit/bunch and soluble solids in fruits were found to be the most important traits in PC1, PC2, PC3, PC4 and PC5, respectively. As soluble solid content, yield and its component traits have high heritability, therefore, improvement is also possible using breeding approaches. J. Bangladesh Agril. Univ. 17(2): 187–193, June 2019

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Effect of Fasting and Foliar Application with Urea on Egyptian Lime Trees Productivity B. Vegetative growth, leaf chlorophyll content, leaf carbohydrate fractions and fruit quality in lime trees

Alexandria Science Exchange Journal An International Quarterly Journal of Science Agricultural Environments ◽

10.21608/asejaiqjsae.2011.2422 ◽

2011 ◽

Vol 32 (APRIL- JUNE) ◽

pp. 227-239

Keyword(s):

Chlorophyll Content ◽

Fruit Quality ◽

Vegetative Growth ◽

Foliar Application ◽

Leaf Chlorophyll Content ◽

Leaf Chlorophyll

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Developmental Consequences of Cold Temperature Stress at Transplanting on Seedling and Field Growth and Yield. II. Muskmelon

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.126.4.410 ◽

2001 ◽

Vol 126 (4) ◽

pp. 410-413 ◽

Cited By ~ 2

Author(s):

Ahmet Korkmaz ◽

Robert J. Dufault

Keyword(s):

Cold Stress ◽

Chlorophyll Content ◽

Fruit Weight ◽

Growth And Yield ◽

Yield Reduction ◽

Late Winter ◽

Stress Exposure ◽

Cold Temperatures ◽

Leaf Chlorophyll Content ◽

Leaf Chlorophyll

For the earliest yields of spring melons, muskmelon [Cucumis melo L. (Reticulatus Group)] fields in the southeast United States may be transplanted in late winter before the last frost date. Seedlings may be exposed to cold temperatures cycling between almost freezing and optimal for weeks before warm weather predominates and such exposure may reduce later growth and yields. To test whether cold stress may reduce growth and yield, `Athena' muskmelon seedlings were subjected to cold stress at 2 ± 1 °C then transferred to a greenhouse at 29 ± 5 °C before field transplanting. In 1997, cold exposure durations were 3, 6, or 9 h and were repeated (frequency) for 1, 3, 6, or 9 d before transplanting. In 1998, duration levels were not changed but frequencies were 3, 6, or 9 d. In 1997, as cold stress increased, seedling shoot and root fresh and dry weights, height, leaf area, and leaf chlorophyll content decreased linearly, but shoot carbohydrates decreased curvilinearly and stabilized with ≈54 hours cold stress. In 1998, all seedling growth characteristics except leaf chlorophyll content decreased linearly as cold stress exposure increased. Leaf chlorophyll content decreased curvilinearly as cold stress increased to 36 h, but leveled off with more hours of cold stress. Even 1 week after transplanting, plants exposed to cold stress for up to 81 h continued to transpire more than control plants. In both years, vining (date first runner touched the ground) and male and female flowering were delayed significantly with increasing cold stress, but fruit set was affected only in 1998. Cold stress in 1998 delayed earliness with early fruit weight and number per plot decreasing as cold stress exposure increased. Total yields decreased linearly in both years as cold stress increased with 21 to 32 hours causing 10% yield reduction in 1997 and 1998, respectively. Results indicate a potential risk exists for yield reduction if `Athena' muskmelon is planted weeks before last frost dates.

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The applicability of empirical vegetation indices for determining leaf chlorophyll content over different leaf and canopy structures

Ecological Complexity ◽

10.1016/j.ecocom.2013.11.005 ◽

2014 ◽

Vol 17 ◽

pp. 119-130 ◽

Cited By ~ 68

Author(s):

H. Croft ◽

J.M. Chen ◽

Y. Zhang

Keyword(s):

Chlorophyll Content ◽

Vegetation Indices ◽

Leaf Chlorophyll Content ◽

Leaf Chlorophyll

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

G3 Genes|Genome|Genetics ◽

10.1093/g3journal/jkab130 ◽

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.

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