ABSTRACT

A new cotton variety; RH-668 is high yielding, resistant to environ adversities and governing improved fiber quality traits. This heat & drought tolerant variety that withstands harsh hot & dry climatic conditions was developed by Cotton Research Institute, Khanpur (RYK) for cultivation in the Punjab. RH-668 was established by cross of diversified cultivars VH-259 & RH-620 in 2006-2007 followed by gene pyramiding to retain superior combinations with higher yield potential, CLCuV tolerance and good fiber quality right from F2-F5 generations via. Bulk Pedigree method. This advanced line was then tested under variant agro-climates at local, provincial and then national trials during 2013-2018. In national trials (NCVT) RH-668 outperformed others in yield and fibre related characters against the Checks; CIM-602 & FH- 142 and was approved by Punjab seed Council in 2018 for general cultivation. This cultivar was commercialized as superior new cotton variety “RH-668” having 39.4 % GOT, 4.5 Mic., 28.78 mm staple length and yield potential of 30-60 mounds/acre. Keywords: Gossypium hirsutum L., RH-668, gene pyramiding, pedigree selection, drought resistant, CLCuV tolerance
Publication date: 01/02/2020

https://ijbpas.com/pdf/2020/February/MS_IJBPAS_2020_4969.pdf

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https://doi.org/10.31032/IJBPAS/2020/9.2.4969