Solanum lycopersicum

Genetic variability of NaCl tolerance in tomato

A. Saeed, Saleem, M. F., Zakria, M., Anjum, S. A., Shakeel, A., and Saeed, N., Genetic variability of NaCl tolerance in tomato, vol. 10, pp. 1371-1382, 2011.

Cultivation of crops in soils with high salt (NaCl) content can affect plant development. We examined the morphological and physiological mechanisms of salt tolerance in tomato. The responses of 72 accessions of tomato (Solanum lycopersicum) to salinity were compared by measuring shoot and root lengths, and fresh shoot and root weights relative to those of controls (plants grown in normal salt levels). All traits were reduced at the seedling stage when salinity levels were increased. The accession x salinity interaction was significant for all traits.

Comparison of multivariate statistical algorithms to cluster tomato heirloom accessions

L. S. A. Gonçalves, Rodrigues, R., Júnior, A. T. Amaral, Karasawa, M., and Sudré, C. P., Comparison of multivariate statistical algorithms to cluster tomato heirloom accessions, vol. 7, pp. 1289-1297, 2008.

Use of multivariate statistical algorithms is considered an important strategy to quantify genetic similarity. Local varieties and traditional (heirloom) seeds of genotypes are key sources of genetic variation. The Universidade Estadual do Norte Fluminense (UENF), Rio de Janeiro, Brazil, has a tomato gene bank with accessions that have been maintained for more than 40 years. We compared various algorithms to estimate genetic distances and quantify the genetic divergence of 40 tomato accessions of this collection, based on separate and joint analyses of discrete and continuous variables.

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