Page 267 - e-Book

Fig. 2: Histogram showing the alcohol dehydrogenases and glucose

Dehydrogenases activities in the host plant infected by the root knot nematode
M.incognita

Discussion

M. incognita, a root knot nematode, has been proven to be a severe agricultural
concern. It causes anchoring and absorption issues in vulnerable plants as an obligatory

endoparasite. Plants infected with nematodes become nutritionally inadequate, exhibiting

stunted growth, chlorosis, withering, and other symptoms. Plant growth was also slowed by
nematode infection, according to previous researchers.

Infected plants have been seen to be more prone to wilting than healthy plants. The
absorption of nutrients by galled roots is significantly reduced, regardless of the weight of the

root tissues compared to a healthy plant. As a result, top growth is inhibited, as demonstrated
in the current study. Taking Raut and Sethi's (1980) proposal into account, analysing the top

weight rather than the root weight and analysing the pathological effect is a superior

parameter.
Nematodes deplete plant nutrients, change nutrient flow patterns in plant tissue, and

slow growth (Hunter, 1958), all of which can lead to lower plant production. Gall production

may deplete the plant's nutrients in shoot tissue, resulting in a reduction in shoot growth. The
amount of plant resources diverted was previously mentioned as being linked to a high

nematode population density (Wallace, 1969.). As a result, S. has a smaller root and shoots.
It's possible that the A.esculents, seen in this study is due to larger gall in the root harbouring

more larvae in the root gall.

257