Assessment of dwarf genotypes in litchi based on some trunk and leaf characteristics
Characterization of dwarf genotypes of litchi
DOI:
https://doi.org/10.21921/jas.v8i04.7749Keywords:
India, Litchi chinensis, trunk characters, leaf characters, dwarfAbstract
Studying the relationship between trunk quantitative parameters and tree growth and vigour in litchi is crucial for estlablishing the basis of dwarfing in different genotypes. Observation on plant height, trunk girth, bark area of trunk, xylem diameter, xylem area, xylem transversal area, bark transversal area, trunk transversal area, bark:wood ratio, rachis length, leaf blade length, dry weight of leaf were recorded on 30 litchi genotypes, having diverse growth habit. Data were subjected to correlation analysis. A positive correlation of plant height was found with trunk girth, rachis length, leaflet blade length and dry weight of leaf which was observed which also exhibited strong positive correlation with xylem diameter, xylem area and xylem transversal area. Similarly, bark area had a very strong positive correlation with bark:wood ratio but was negatively correlated with plant height, trunk girth, xylem diameter, xylem area and xylem transversal area. In litchi, dwarf genotypes have higher bark area and bark:wood ratio compared to vigorous ones. Using these parameters as criteria for screening the dwarfing genotypes would be useful to generate the information for differentiating between genotypes with varying growth and vigour.
References
Beakbane A B and Thompson E C. 1947. Anatomical studies of stems and roots of hardy fruit trees. IV. The root structure of some newclonal apple rootstocks budded with Cox’s Orange Pippin. J. Pom. Hortic. Sci. 23:206–211.
Miller SR, Nelson SH and Heeney HB.1961. Studies on apple rootstock selections relating respiration rates to an anatomical method of predicting dwarfness. Can. J. Plant. Sci. 41:221–226.
Basile B, Marsal J and DeJong TM. 2003. Daily shoot extension growth of peach trees growing on rootstocks that reduce scion growth is related to daily dynamics of stem water potential. Tree Physiol. 23:695–704.
Jaumien F and Faust M 1984. Stem anatomical structure of Delicious and Golden Delicious apple hybrids with various growth dynamics. Acta Hortic. 146:67-69.
Mukherjee SK and Das D. 1980. Anatomical screening of mango (Mangifera indica L.) seedlings for use as dwarfing rootstock. Sci. Cult. 46:333-336.
Tombesi, S., Johnson, S.R., Day, K.R. and DeJong, T.M. 2010. Relationships between xylem vessel characteristics, calculated axial hydraulic conductance and size-controlling capacity of peach rootstocks. Ann. of Bot., 105:327–331
Seleznyova AN, Tustin DS and Thorp TG. 2008. Apple dwarfing rootstocks and interstocks affect the type of growth units produced during the annual growth cycle: precocious transition to flowering affects the composition and vigor of annual shoots. Ann. of Bot. 101:679–687
Olmstead MA, Lang NS, Lang GA, Ewers FW and Owens SA. 2004. Characterization of xylem vessels in sweet cherries (Prunus avium L.). Acta Hortic. 636:129–135
Jimenez AL and Priego AFB. 1987. Selection of Dwarfing Rootstocks of Avocado (Persea Americana Mill.). California Avocado Society Yearbook 71:225-234
Majumdar PK, Chakladar BP and Mukherjee SK. 1972. Selection and classification of mango rootstocks in the nursery stage. Acta Hortic. 24:101-106.
Hegazi ES, Hegazi AA and AbdAllatif AM. 2013. Histological Indicators of Dwarfism of some Olive Cultivars. World Appl. Sci. J. 28:835-841.
Rashedy AA, El Kheshin M and AbdAllatif AM. 2014. Histological Parameters Related to Dwarfism in Some Mango Cultivars. World J. Agric. Res. 10:216-222.
