caa a22 4500 445323809 CHVBK 20180317142713.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10681-010-0271-3 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0271-3 Heterosis, molecular diversity, combining ability and their interrelationships in short duration maize ( Zea mays L.) across the environments [Elektronische Daten] [Pooja Devi, N. Singh] Five inbred lines, 10 single cross maize (Zea mays L.) hybrids and two standard cultivars as check were used to study the combining abilities and heterosis under three environmental conditions. Random amplified polymorphic DNAs (RAPDs) markers were used to study the genetic diversity (GD) and further to analyze relationship of RAPDs based GD with combining ability and heterosis in short duration maize. Spearman's rank correlation coefficients and linear regressions were analyzed to identify the most important factor determining heterosis and per se performance of the hybrids. Variances due to general combining ability (GCA), specific combining ability (SCA) and their interactions with environment were found to be significant. Twenty random primers generated 179 RAPD fragments. Of these, 102 RAPD fragments were polymorphic. GD was determined using Jaccard's similarity coefficient, and a dendogram was constructed by UPGMA cluster analysis. The RAPDs based GD exhibited non-significant negative or positive association, non-significant linear regression along with very low coefficient of determination (R 2) with SCA, high and mid parent heterosis (HP and MP) and per se performance of the hybrids. Significant positive correlations and regressions along with high coefficients of determination were recorded for SCA with HP, MP and per se performance of the hybrids. The HP and MP also established significant positive association and linear regression along with high coefficient of determination with per se performance of hybrids whereas the parental mean did not establish any significant correlations with the GD, HPH, MPH and grain yield of F1s. The present investigation, therefore, did not find any role of RAPDs based GD in determining hybrid heterosis and hybrid performance in short duration sub-tropical maize. The SCA, however, has emerged as the most important factor in determination of heterosis as well as per se performance of the hybrids in short duration maize. Springer Science+Business Media B.V., 2010 RAPDs markers nationallicence Maize nationallicence Combining ability nationallicence Heterosis nationallicence Rank correlation nationallicence Devi Pooja Department of Genetics and Plant Breeding, G. B. Pant University of Agriculture & Technology, 263145, Pantnagar (Udhamsingh Nagar), Uttarakhand, India aut Singh N. Department of Genetics and Plant Breeding, G. B. Pant University of Agriculture & Technology, 263145, Pantnagar (Udhamsingh Nagar), Uttarakhand, India aut Euphytica Springer Netherlands 178/1(2011-03-01), 71-81 0014-2336 178:1<71 2011 178 10681 https://doi.org/10.1007/s10681-010-0271-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0271-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Devi Pooja Department of Genetics and Plant Breeding, G. B. Pant University of Agriculture & Technology, 263145, Pantnagar (Udhamsingh Nagar), Uttarakhand, India aut NATIONALLICENCE 700 1- Singh N. Department of Genetics and Plant Breeding, G. B. Pant University of Agriculture & Technology, 263145, Pantnagar (Udhamsingh Nagar), Uttarakhand, India aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 178/1(2011-03-01), 71-81 0014-2336 178:1<71 2011 178 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer