Studies on stability parameters for yield and its components in onion

Abstract

Genotype-environment interaction is very important to the plant breeders in developing improved varieties. The present investigation was carried out at the National Horticultural Research and Development Foundation, Nashik, Maharashtra during three consecutive years (2008-11) along with Agrifound Light Red, Agrifound White and NHRDF-Red as checks in randomized block design with three replications. The aim of the study was to identify the suitable and stable genotypes for Rabi season with higher yield and others horticultural attributes. Agrifound Light Red performed good in favorable environment for gross yield and marketable yield and had high plant height, bulb diameter, bulb size index, less double percent and were stable. Considering the gross and marketable yields, the genotypes 380 and 652, 672 recorded stable performances for desirable traits such as medium plant height, more leaves per plant, lowest neck thickness, more 20 bulbs weight, less double and bolters and early initiation of bulbs. The above genotypes can be further exploited in breeding programme for increasing the production of onion.