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Range Management and Agroforestry
Year : 2020, Volume : 41, Issue : 2
First page : ( 235) Last page : ( 241)
Print ISSN : 0971-2070. Online ISSN : 2249-5231.

Breeding methodology for improvement of grain and fodder yield and quality traits in dual purpose sorghum [Sorghum bicolor (L.) Moench]

Khan Rumana*, Ranwah Balu Ram

Maharana Pratap University of Agriculture and Technology, Udaipur-313001, India

*Corresponding author khanrumana315@gmail.com

Online published on 18 February, 2021.

Abstract

A total of 100 genotypes including 75 F1's with 20 parents and 5 checks were planted in simple lattice design with two replications during Kharif 2015 and Kharif 2016 in two intra row spacing viz., 12.5 cm and 20 cm to analyze the buffering ability of genotypes. Data were collected for seven dual purpose attributing traits i.e. grain yield, dry fodder yield, protein content in grain, protein content in fodder, TSS, juiciness and stay greenness. On the basis of per se performance, economic heterosis and SCA effects for both grain yield and dry fodder yield, two crosses viz., ICSA 202 x SU 1570 and ICSA 474 x SU 1561 were identified as promising for normal spacing environments (E1 and E3) and ICSA 202 x SU 1561 for wider spacing environments (E2 and E4). The days to 50 per cent flowering of ICSA 202 and SU 1570 were almost equal. Therefore, heterosis breeding is recommended for ICSA 202 x SU 1570, whereas to exploit ICSA 474 x SU 1561 through heterosis breeding staggered sowing is essential. The dual-purpose cross, ICSA 202 x SU 1561 in wider spacing was having significant SCA and involved at least one good general combiner parent and equal days to 50 per cent flowering in the parents. Therefore, this could also be exploited through heterosis breeding.

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Keywords

Combining ability, Dry fodder yield, GCA, Heterosis, Protein content, SCA.

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