EFFECT OF BACTERIAL WILT ON SOME PHYSIOLOGY OF GROUNDNUT VARIETIES (Arachis hypogaea. L)
Keywords:
Physiology, Bacterial wilt, chlorophyll, photosynthesis, GroundnutAbstract
Bacterial wilt caused by Ralstonia solanacearum is an important groundnut pathogen that caused
rapid wilting and death of entire groundnut without any yellowing or spotting of leaves. The aim
was to determined the wilt disease effect on chlorophyll and photosynthesis on selected
groundnut varieties (Arachis hypogaea.L). Eleven varieties of groundnut were used; the
experiment was arranged in Randomized Complete Block Design with four treatments; R.
solanacearum inoculation through leaves, seed, stem and control with three replication. Result
for chlorophyll content showed that there is a significance difference between treatment and
variety, but there is no significance difference between treatments by variety interaction at 7days
after inoculation. Highly significance difference between treatments, variety and treatments by
variety interaction was observed at 28 and 49days after inoculation. The result for photosynthesis
showed a significance difference between treatment and variety, but there is no significance
between treatment and variety at 14days after inoculation. Highly significance difference was
observed between treatments, variety and treatments by variety interaction at 21days. SAMNUT
23, Bahaushiya and Kwankwaso recorded high disease incidence after foliar, seed and stem
inoculation respectively.