Morphophysiological expression in cms analogues of sunflower (Helianthus annuus L.) Under water stress environment

Abstract

The objective of this study was to evaluate the effect of water stress on morphological, seed yield and quality traits of sunflower cms analogues. The material comprised nine cms analogues having different cytoplasmic background namely CMS-XA (Unknown), E002-91, PKUZ-A, ARG-2A (H. argophyllus), ARG-3A (H. argophyllus), ARG-6A (H. argophyllus), DV-10A (H. debilis ssp vestitus), PHIR-27A (H. praecox ssp hirtus) and PRUN-29A (H. praecox ssp runyonii) with a common maintainer line (NC-41B). The material was grown during spring season 2011 and 2012 in randomized block design with three replications in a plot size of 4.5 m. × 0.6m. To create water stress environment the irrigation was stopped after the anthesis was complete. The data were recorded on different morphological, seed yield and quality traits. The analysis of variance revealed highly significant differences for all the traits over the years. The cms analogues CMS-XA (37.48g), E002-91(32.07g), ARG-3A (32.17g), PHIR-27A (34.03g) and PRUN-29A (30.42g) were observed to be significantly higher yielder than that of NC-41B (23.53g). This suggested that these sources might be exploited to develop water use efficient cms lines suitable for developing hybrids for growing under water stress conditions.