Abstract
Genotype x environment interaction was determined from a field experiment conducted to evaluate sorghum landraces of North Western Nigeria during the 2010 rainy season at Usmanu Danfodiyo University, teaching and research farm, Sokoto, Sokoto State and during 2011 rainy season at Bubuche, Augie Local Government Area, Kebbi State, North-Western Nigeria. The materials used in the study consisted of ten indigenous grain sorghum genotypes representing the types widely grown in North-Western Nigeria. The treatments were laid out in a Randomized Complete Block Design (RCBD) and replicated three times. Data were collected on sorghum traits in accordance with the procedure outlined in the IBPGR/ICRISAT sorghum descriptor. The study revealed that genotype by environment interaction had significant influence on only plant height (6804.4**), leaf area index (0.86*) and flag leaf length (67.99*). Indicating that selection for plant height, flag leaf length and leaf area index is environment dependent. However, leaf number (8.68), leaf length (96.44), flag leaf area (3131.93), straw weight (3.8), 100-seed weight (34.68), and total grain yield (1233080) recorded non significant G x E influence. Selection for these traits can therefore be carried out across the two environments. Key words: Biomass, environment, genotype, influence, sorghum.
Highlights
Sorghum (Sorghum bicolor L.) Moench is a staple food crop for millions of poor in the semi-arid tropics (SAT) and is adapted to a wide range of environmental conditions
The materials used in the study consisted of ten indigenous grain sorghum genotypes representing the types widely grown in NorthWestern Nigeria
The materials used in the study consisted of ten indigenous grain sorghum genotypes representing the types widely grown in NorthWestern Nigeria, which were collected by the National Center for Genetic Resources and Biotechnology (NACGRAB), Moor plantation, Ibadan, Nigeria (Table 2)
Summary
Sorghum (Sorghum bicolor L.) Moench is a staple food crop for millions of poor in the semi-arid tropics (SAT) and is adapted to a wide range of environmental conditions. In 2011 the world grain production of sorghum was 4,198,010 tonnes, with an average yield of 15, 274 kg/ha over 35,482,800 ha (FAOSTAT, 2011). Sorghum as a crop originated as far back as 3,000 years ago The selection in those early times was for grain more than for forage. To develop a variety with high yielding ability and consistency, high attention should be given to the importance of stability performance for the genotypes under different environments and their interactions (Ghazy.Mona et al, 2012). In order to exploit the existing variability and develop new high yielding cultivars, sorghum improvement efforts under diverse environmental conditions are needed (Faisal and Aisha, 2011). The objective of the study was to investigate the influence of genotype by environment interaction on biomass production of sorghum in semi arid North Western, Nigeria
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