TY  - BOOK
AU  - Premakumari D
AU  - Panikkar A O N
AU  - Sethuraj M R
TI  - Correlation of the characters of petiolar stomata with leaf retention after the incidence of phytophthora leaf fall disease in Hevea brasiliensis (Willd. ex. Adr. de Juss.) Muell. Arg
PY  - 1988///
PB  - Indian Journal of Natural Rubber Research
KW  - Disease resistance
KW  - Hevea brasiliensis
KW  - Petiolar stomata
KW  - Phytophthora leaf fall disease
N2  - The characters of petiolar stomata and the leaf retention percentage after the incidence of Phytophthora leaf fall disease in Hevea brasiliensis (Willd. ex Adr. de Juss) Muell. Arg. was studied in six Hevea clones.  Considerable differences between disease resistant and susceptible groups of clones were observed for leaf retention percentage, no. of stomata/10mm2 length of stomatal aperture and aperture index.  Leaf retention percentage had negative correlations with no. of stomata/10mm2(P<0.01), length of stomatal aperture (P<0.05) and the aperture index (P<0.01).  Partial and multiple correlations showed the importance of the frequency of petiolar stomata and the aperture index as criteria for selection of disease resistant clones. About 68 per cent variation in leaf retention after the incidence of Phytophthora leaf fall disease could be explained by the characters of petiolar stomata
ER  -