Heterotic studies in spring wheat across two environments
Paper Details
Heterotic studies in spring wheat across two environments
Abstract
Eight spring wheat genotypes were crossed in half diallel fashion for heterosis, heterobeltosis and inbreeding depression studies. Six traits including plant height, flag leaf area, number of tillers per plant, number of grains per spike, 1000-grian weight and grain yield per plant were recorded under two different environments (E1 and E2). Maximum heterosis and heterobeltosis (39.84%) and (23.29%), were exhibited in the crosses, Pavon / 076397 and 076396 / Aas-11, respectively under E1. Highly significant heterosis (14.72%) was showed by the cross Pavon / 076396 while the cross Pavon / 076397 gave highly significant grain yield (8.74%) over better parent under E2. As concerned inbreeding depression, superiority of F1 over F2 was observed in most of the crosses in both environments. For yield and some yield related traits, most of combinations exploited the significant inbreeding depression under both environmental conditions. Number of grains per spike was important for heterosis, while better tillering, high 1000 grain weight with less negative growth and dwarfness were important in some of the hybrid combinations.
Abdullah GM, Khan AS, Ali Z. 2002. Heterosis Study of Certain Important Traits in Wheat. International Journal of Agriculture and Biology, 4(3), 326-328.
Chowdhry MA, Iqbal M, Subhani GM, Khaliq I. 2001. Heterosis, inbreeding depression and line performance in crosses of Triticum aestivum. Pakistan Journal of Biological Sciences. 4(1), 56-58.
Chowdhry MA, Parveen N, Khaliq I, Kashif M. 2005. Estimation of heterosis for yield and yield components in bread wheat. Journal of Agriculture Social Sciences. 1(4), 304-308.
Fonsecca SF, Patterson L. 1968. Hybrid vigour in seven-parent diallel cross in common wheat. Crop Sciences. 2, 85-88.
Hussain F, Ashraf M, Mehdi SS, Ahmad MT. 2004. Estimation of heterosis for grain yield and its related traits in wheat (Triticum aestivum. L.) under leaf rust conditions. Journal of Biological Sciences. 4(5), 637-644.
Inamullah Ahmad H, Mohammad F, Din SU, Hassan G, Gul R. 2006. Evaluation of heterotic and heterobeltiotic potential of wheat genotypes for improved yield. Pakistan Journal of Botany. 38(4), 1159-1167.
Joshi SK, Sharma SN, Singhania DL, Sain RS. 2003. Hybrid vigor over environments in a ten-parent diallel cross in common wheat. SABRAO Journal of Breeding and Genetics. 35(2), 81-91.
Kakar AA, Larik AS, Kumbhar MB, Anwar M, Naz MA. 1999. Estimation of heterosis, potence ratio and combining ability in bread wheat (Triticumaestivum L.). Pakistan Journal of Agricultural Sciences. 36(3-4), 169-174.
Khan AS , Sher A. 1999. Estimation of heterotic effects for yield and its components in bread wheat (Triticumaestivum L.). Pakistan Journal of Biological Sciences. 2(3), 928-930.
Mackey I. 1976. Genetics and evolutionary principles of heterosis. In: Janossy, A and Lupton, F. G. H. (eds), Heterosis of plant breeding. Proceeding 8th Congress Eucarpia Elsevier: 17-33.
Shull GH. 1952. Beginnings of the heterosis concept. In: Heterosis J. W. Gowen (Ed.). Lowa State College Press, Amsterdam. 14-48.
Singh H, Sharma SN, Sain RS. 2004. Heterosis studies for yield and its components in bread wheat over environments. Hereditas, 141, 106-114.
Steel RGD, Torri JH, Dickey DA. 1997. Principles and procedures of statistics; A biometrical approach. 3rd Ed., McGraw Hill Book Cooperation. New York.
Manzoor Hussain, Ahsan Irshad, Ali Ammar, Khalid Mahmood, Muhammad Kashif Aziz, Muhammad Raheel, Chaudhry Ghulam Hussain, Seema Mahmood, 2014. Heterotic studies in spring wheat across two environments. J. Biodiv. Environ. Sci., 5(5), 143-148.
Copyright © 2014 by the Authors. This article is an open access article and distributed under the terms and conditions of the Creative Commons Attribution 4.0 (CC BY 4.0) license.