Journal of Pure and Applied MicrobiologyVol. 9 No. 3

Per Se Performance and Selection Indices over Irrigated and Limited Irrigation Conditions in Coriander (Coriandrum sativum L.)

Sunita Kumari1, L. K. Sharma1, Sandhya2* and Mukul2

1Department of Genetics and Plant Breeding, Junagadh Agricultural University, Junagadh, Gujarat, India. 2Department of Genetics and Plant Breeding, Banaras Hindu University, Varanasi, Uttar Pradesh, India.

Received on 06 April 2015 and accepted on 19 August 2015

 

ABSTRACT

Twenty five diverse genotypes of coriander (Coriandrum sativum L.) were tested in RBD with three replications during the rabi seasons in the year 2012-13 at instructional farm, Junagadh Agriculture University, Junagadh. The objective of the experiment was to construct efficient selection indices that could lead to high genetic advance for grain yield. The result indicated that all of the selection indices made up of a single trait were inefficient over direct selection for grain yield under both the situations. The relative efficiencies of selection indices constructed in combinations of two or more traits were ranged from 124.65 to 1824.33% and 176.71 to 1576.87% in irrigated and limited irrigation conditions, respectively. An index composed of plant height, umbels per plant, seeds per umbel and harvest index was the most efficient (1699.42%) under irrigated condition. The most efficient (1421.56%) selection index under limited irrigated condition was constructed by using seed yield, umbels per plant, seeds per umbel and harvest index. Direct selection for harvest index gave high genetic advance (10.43%) in irrigated condition while in limited irrigation condition seeds per umbel showed high genetic advance (8.52%) among all selected characters. Generally the use of selection index improved genetic advance over direct selection for grain yield under both water regimes. Construction and exploration of selection index in practical plant breeding is therefore important in coriander breeding programmes.

Keywords : Coriander, Coriandrum sativum, Selection index, Genetic advance.