caa a22 4500 378916904 CHVBK 20180305123555.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.2298/hel0441051r doi (NATIONALLICENCE)gruyter-10.2298/hel0441051r PREDICTION OF HETEROSIS BASED ON GENETIC DIVERGENCE OF PARENTS THROUGH REGRESSION ANALYSIS IN SUNFLOWER (Helianthus annuus L.) [Elektronische Daten] PREDICCIÓN DE HETEROSIS SOBRE LA BASE DE LA DIVERGENCIA GENÉTICA DE LOS PROGENITORES MEDIANTE EL ANÁLISIS DE REGRESIÓN DE GIRASOL [Helianthus annuus L.] / PRÉVISION DE L'HÉTÉROSIS SELON LA DIVERGENCE GÉNÉTIQUE DES GÉNITEURS PAR L'ANALYSE DE RÉGRESSION DU TOURNESOL (Helianthus annuus L.) / [G. Mohan Rao, Lakshmikantha Reddy, R.S. Kulkarni, S. Ramesh, S.S. Lalitha Reddy] An investigation was carried out at the experimental plots of the Department of Genetics and Plant Breeding, Main Research Station, University of Agricultural Sciences, Hebbal, Bangalore, India to predict the level of heterosis based on genetic divergence through regression analysis in sunflower. One hundred and forty crosses involving 10 lines and 14 testers were affected and evaluated for ten quantitative traits. Better parent heterosis (BPH) of crosses was estimated and correlated with genetic divergence between parents as measured by Mahalanobi's D2 statistic. The relationship between characterwise parental divergence and better parent heterosis only for five important characters viz., plant height, head diameter, seed yield, oil content and oil yield, was determined using linear regression and curvilinear regression of second degree. The estimates of better parent heterosis significantly regressed towards the genetic distance of the parents. However, it was not enough for successful prediction of heterosis through either linear or curvilinear regression of second degree as indicated from highly significant chi-square values for observed and predicted estimates of heterosis for all these characters. This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. genetic divergence nationallicence heterosis nationallicence regression nationallicence D2 statistic nationallicence linear regression nationallicence curvilinear regression nationallicence Mohan Rao G. Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut Reddy Lakshmikantha Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut Kulkarni R.S. Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut Ramesh S. Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut Reddy S.S. Lalitha Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut HELIA De Gruyter 27/41(2004-12-01), 51-58 1018-1806 27:41<51 2004 27 helia https://doi.org/10.2298/hel0441051r text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2298/hel0441051r text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mohan Rao G. Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut NATIONALLICENCE 700 1- Reddy Lakshmikantha Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut NATIONALLICENCE 700 1- Kulkarni R.S. Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut NATIONALLICENCE 700 1- Ramesh S. Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut NATIONALLICENCE 700 1- Reddy S.S. Lalitha Department of Genetics and Plant Breeding S. V. Agriculture College, Tirupati (ANGRAU), Andhra Pradesh, India aut NATIONALLICENCE 773 0- HELIA De Gruyter 27/41(2004-12-01), 51-58 1018-1806 27:41<51 2004 27 helia CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter