%0 Journal Article
%T Heterosis for Yield and Yield Components in Okra (Abelmoschus esculentus (L.) Moench) Heterosis para Producci車n y Componentes del Rendimiento en Gombo (Abelmoschus esculentus (L.) Moench)
%A Thirupathi Reddy Medagam
%A Haribabu Kadiyala
%A Ganesh Mutyala
%A Begum Hameedunnisa
%J Chilean Journal of Agricultural Research
%D 2012
%I 
%X The study of heterosis would help in selection of heterotic crosses for commercial exploitation of F1 hybrids in okra (Abelmoschus esculentus (L.) Moench). Forty five F1S were developed by crossing 10 elite lines of okra: P1(IC282248), P2(IC27826-A), P3(IC29119-B), P4(IC31398-A), P5(IC45732), P6(IC89819), Py(IC89976), P8(IC90107), P9(IC99716), and P10(IC111443), in half diallel fashion during summer 2009. All 45 F1s along with their 10 parents and one standard control (Mahyco Hybrid N∼ 10) were evaluated in a randomized complete block design with three replicates during early kharif (June to September) 2009 at the Vegetable Research Station, Rajendranagar, Andhra Pradesh, India, for heterosis of yield and its components of okra. Significance of mean squares due to genotypes revealed the presence of considerable genetic variability among the material studied for almost all yield and yield attributes except plant height. The overall mean heterosis over mid parent and standard control for total yield per plant was 6.92 and -15.44%, respectively, while for marketable yield per plant were 6.64 and -22.18%, respectively. Negatively heterotic crosses like C19 (P3XP5) for days to 50% flowering (-4.35%) and C4(P1XP5) for first flowering and fruiting nodes (-15.22%), respectively, are important to exploit heterosis for earliness in okra. The crosses with non-significant standard heterosis in any given direction for total yield per plant C42, C31, C35, C25, and C36 (8.63, -0.08, -2.61, -3.26, and -4.57%, respectively) and marketable yield per plant C42, C31, and C36 (-5.87, -6.56, and -10.54%, respectively), were statistically on par with the standard control in their mean performance and are found to be as promising as that of the standard control. The F1 hybrid C42(P7XP10) with high yield potential has the potential for commercial cultivation after further evaluation for early kharif season. El estudio de heterosis podr赤a ayudar en la selecci車n de cruzas heter車ticas para la explotaci車n comercial de h赤bridos F1 de gombo (Abelmoschus esculentus (L.) Moench). Cuarenta y cinco F1s fueron desarrolladas cruzando 10 l赤neas elite de gombo: P1(IC282248), P2(IC27826-A), P3(IC29119-B), P4(IC31398-A), P5(IC45732), P6(IC89819), P7(IC89976), P8(IC90107), P9(IC99716) y P10(IC111443), en forma de medio dialelo durante el verano 2009. Todas las 45 F1s junto con sus 10 padres y un control est芍ndar (H赤brido de Mahyco N∼ 10) fueron evaluadas en un diseno de bloques completos al azar con tres repeticiones durante kharif temprano (junio a septiembre) 2009 en la Estaci車n de Investigaci
%K Abelmoschus esculentus
%K F1 h赤bridos
%K cruzas medio dialelo
%K patr車n heter車tico
%K vigor h赤brido
%K rendimiento medio
%K l赤neas parentales
%K Abelmoschus esculentus
%K F1 hybrids
%K half diallel crosses
%K heterotic pattern
%K hybrid vigour
%K mean performance
%K parental lines
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300003