01097naa a2200205 a 450000100080000000500110000800800410001910000270006024501200008726000090020752004870021665300100070365300120071365300300072565300270075565300150078265300220079770000240081977300480084316469061995-08-29       1983    bl ---       0--  u    #d1 aRAGHAVENDRA RAO, N. N.  aEvaluation of strains of poncirus trifoliata and trifoliate orange hybrids for resistance to phytophthora root rot.  c1983  aTen strains of Poncirus trifoliata (L.) Raf. and 6 trifoliate orange hybrids were evaluated for resistance to root rot caused by Phytophthora nicotianae B. de Haan var. Parasitica (Dast.) Waterh. A high degree of resistance was shown was shown by Rubidoux trifoliate and Trifoliate orange (Srirampur). Trifoliate orange hybrids, in general, were less resistat than P. trifoliata strains. The usefulness of different parameters in the assessment of root damage are briefly discussed.  a) Raf  ade Haan  aPhytophthora nicotianae B  aPoncirus trifoliata (L  aresistance  atrifoliate orange1 aPRASAD, M. B. N. V.  tScientia Horticulturaegv.20, p.85-90, 1983