Author(s):

Lily Maxima Kispotta, Arti Beena Ekka, SK Tirkey, Punam Horo and KK Prasad

Abstract: Gladiolus, a majestic bulbous ornamental crop grown throughout the world, belongs to family Iridaceae. With changing lifestyle and urban culture importance of ornamental flowers increasing day by day. In this regard gladiolus gained much importance. An experiment was carried out with ten gladiolus varieties in randomizes block design, with three replications at the Dept. of Hort, B.A.U. Ranchi during the period Dec2009- May2014, to estimate genetic variability, heritability, genetic advance and genetic advance as % of mean for 11 contributing characters. The PCV were higher than GCV for all the characters taken into consideration. Phenotypic and genotypic coefficients of variation were highest for the spike length (34.16 and 34.18 respectively) followed by number of floret per spike (33.02 and 33.25 respectively) and lowest for size of corm (14.11 and 16.16 respectively) indicated the presence of sufficient genetic variability for selection in these traits. Days taken for the spike emergence was positively and highly significant with the days taken for bud initiation, days taken for 1st floret to show colour, days taken for 1^st floret to open, no. of floret open at a time, diameter of the floret and spike length. Days taken for spike emergence was however, negatively and significantly correlated with no. of floret per spike, no. of shoot per plant and vase life. Genetic advance ranged from 0.91 to 50.76 highest for spike length and lowest for size of corm. Expected genetic advance expressed as percent of mean ranged from 25.31 and70.33%. High heritability and high genetic advance in spike length (1.00 and 70.33). The selection on the basis of spike length, number of floret per spike and vase life will be more effective for further breeding programme.

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