Genetic variability, character association and path analysis for yield components in ginger (Zingiber officinale Rosc.)

Twentynine collections of ginger (Zingiber officinale) were studied for variability, character association and path analysis for yield and its 10 component characters. Wide range of variability was observed for most of the characters studied. Rhizome yield per plant was positively associated with plant height, number of fingers per plant ,weight of fingers and weight of primary rhizome. Plant analysis revealed that weight of fingers, width of fingers and leaf width were the strongest forces influencing yield. &nbsp

Genetic variability, character association and path analysis for yield components in ginger (Zingiber officinale Rosc.)

Twentynine collections of ginger (Zingiber officinale) were studied for variability, character association and path analysis for yield and its 10 component characters. Wide range of variability was observed for most of the characters studied. Rhizome yield per plant was positively associated with plant height, number of fingers per plant ,weight of fingers and weight of primary rhizome. Plant analysis revealed that weight of fingers, width of fingers and leaf width were the strongest forces influencing yield. &nbsp

Multivariate analysis in chilli (Capsicum annum L.)

Thirty genotypes of chilli (Capsicum annum) were studied for genetic divergence for eight characters utilizing Mahalanobis D2 statistics. The genotypes were grouped into seven clusters. The genotype GP-65(A) was quite different and formed cluster VII. Variability in this material was limited and was mainly due to a few extreme types. The genotype(s) in clusters II, V and VII had the highest dry yield per plant and higher values for fruits per plant, fruit length and days to flower and could be utilized in breeding programmes. &nbsp

Multivariate analysis in chilli (Capsicum annum L.)

Thirty genotypes of chilli (Capsicum annum) were studied for genetic divergence for eight characters utilizing Mahalanobis D2 statistics. The genotypes were grouped into seven clusters. The genotype GP-65(A) was quite different and formed cluster VII. Variability in this material was limited and was mainly due to a few extreme types. The genotype(s) in clusters II, V and VII had the highest dry yield per plant and higher values for fruits per plant, fruit length and days to flower and could be utilized in breeding programmes. &nbsp

Multivariate analysis in chilli (Capsicum annum L.)

Thirty genotypes of chilli (Capsicum annum) were studied for genetic divergence for eight characters utilizing Mahalanobis D2 statistics. The genotypes were grouped into seven clusters. The genotype GP-65(A) was quite different and formed cluster VII. Variability in this material was limited and was mainly due to a few extreme types. The genotype(s) in clusters II, V and VII had the highest dry yield per plant and higher values for fruits per plant, fruit length and days to flower and could be utilized in breeding programmes. &nbsp

Recent changes in the snout position and surface velocity of Gangotri glacier observed from space

Glacier mass variations have a direct impact on some of the key components of the global water cycle, including sea level rise and freshwater availability. Apart from being one of the largest Himalayan glaciers, Gangotri is one of the sources of water for the Ganges river, which has a considerable influence on the socioeconomic structure of a largely over-populated catchment area accounting for ~26% of India's landmass. In this study, we present the most recent assessment of the Gangotri glacier dynamics, combining the use of interferometric techniques on synthetic aperture radar data and sub-pixel offset tracking on Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite imagery. Results show that on average, the Gangotri glacier snout has receded at a rate of 21.3 ± 3 m year-1 over a period of 6 years (2004-2010). While glacier surface velocity near the snout is estimated to be between 24.8 ± 2.3 and 28.9 ± 2.3 m year-1, interior portions of the glacier recorded velocities in the range of 13.9 ± 2.3 to 70.2 ± 2.3 m year-1. Further, the average glacier surface velocity in the northern (lower) portions (28.1 ± 2.3 m year-1) is observed to be significantly lower than in the southern (higher) portions (48.1 ± 2.3 m year-1) of the Gangotri glacier. These values are calculated with an uncertainty of less than 5 m year-1. Results also highlight a consistent retreat and non-uniform dynamics of the Gangotri glacier. © 2013 © Taylor & Francis