@Article{phyton.2011.80.019,
AUTHOR = {Cervantes Ortiz  F, G García De los  Santos, A   Carballo Carballo, D  Bergvinson, JL  Crossa, M Mendoza  Elos, E Andrio  Enríquez, JG Rivera  Reyes, E Moreno  Martínez},
TITLE = {Genetic effect estimation related to seed and seedling vigor in Mexican tropical corns},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {80},
YEAR = {2011},
NUMBER = {all},
PAGES = {19--26},
URL = {http://www.techscience.com/phyton/v80nall/36969},
ISSN = {1851-5657},
ABSTRACT = {We determined the genetic components, and the correlation between the F<sub>1</sub> and the F<sub>2</sub> generations, for traits like seed and seedling vigor using a diallel crossing design. The study involved six tropical maize inbred lines from the CIMMYT. Crosses were formed in CIMMYT’s Maize Research Station in Tlaltizapan, Morelos during the summer of 2004. In order to produce F<sub>2</sub> seeds, F<sub>1</sub> crosses were grown at Tepalcingo, Mor. and Iguala, Guerrero. This was accomplished by controlling pollinations (half sibs). Seeds from the F<sub>1</sub> and the F<sub>2</sub> crosses were evaluated at the Colegio de Postgraduados, Montecillo, Mexico. F<sub>1</sub> and F<sub>2</sub> seeds were used to perform a standard germination test. Seed vigor was evaluated after conducting a seed aging treatment, and conductivity and seed weight were also determined. A test for emergence on sand bed was also conducted. Variables recorded included percentage, speed and index of emergence; canopy dry weight; seedling height and vigor indexes I and II. Significant (p≤0.01) effects of the General Combining Ability (GCA) were observed for all traits in both the F<sub>1</sub> and F<sub>2</sub> generations. GCA effects were greater than those of Specific Combining Ability (SCA). The only exception was vigor after the accelerating age treatment for the F<sub>1</sub> seed. Maternal effects in the F1 generation were significant (p≤0.01) for all characters. However, seedling height, canopy dry weight and vigor indexes I and II were not influenced by the female parent in the F2 generation. Parents CML 396 and CML 407 had the highest GCA for seed vigor, while 245 CML expressed the same condition for seedling vigor traits in both generations for most traits evaluated. These materials might be considered for integrating a program of breeding for seed and seedling vigor. On the other hand, there was no direct and significant association of the GCA in the F<sub>1</sub> versus the F<sub>2</sub> generations for all evaluated traits.},
DOI = {10.32604/phyton.2011.80.019}
}