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Morphometric Adjustment in Meloidogyne enterolobii to Botanical Chemicals in Sorghum Cultivars with a Wide Degree of Pre-infectional Nematode Resistance
Version 1
: Received: 4 March 2024 / Approved: 5 March 2024 / Online: 5 March 2024 (12:30:43 CET)
How to cite:
Mashela, P.W.; Pofu, K.M. Morphometric Adjustment in Meloidogyne enterolobii to Botanical Chemicals in Sorghum Cultivars with a Wide Degree of Pre-infectional Nematode Resistance. Preprints2024, 2024030258. https://doi.org/10.20944/preprints202403.0258.v1
Mashela, P.W.; Pofu, K.M. Morphometric Adjustment in Meloidogyne enterolobii to Botanical Chemicals in Sorghum Cultivars with a Wide Degree of Pre-infectional Nematode Resistance. Preprints 2024, 2024030258. https://doi.org/10.20944/preprints202403.0258.v1
Mashela, P.W.; Pofu, K.M. Morphometric Adjustment in Meloidogyne enterolobii to Botanical Chemicals in Sorghum Cultivars with a Wide Degree of Pre-infectional Nematode Resistance. Preprints2024, 2024030258. https://doi.org/10.20944/preprints202403.0258.v1
APA Style
Mashela, P.W., & Pofu, K.M. (2024). Morphometric Adjustment in Meloidogyne enterolobii to Botanical Chemicals in Sorghum Cultivars with a Wide Degree of Pre-infectional Nematode Resistance. Preprints. https://doi.org/10.20944/preprints202403.0258.v1
Chicago/Turabian Style
Mashela, P.W. and Kgabo Martha Pofu. 2024 "Morphometric Adjustment in Meloidogyne enterolobii to Botanical Chemicals in Sorghum Cultivars with a Wide Degree of Pre-infectional Nematode Resistance" Preprints. https://doi.org/10.20944/preprints202403.0258.v1
Abstract
Sorghum-nematode interactions were previously purported to produce chemicals that confer pre-infectional nematode resistance to the infective second-stage juveniles (J2) of the root-knot (Meloidogyne species) nematodes in the rhizosphere, without any contact to J2 bodies. We tested the null hypothesis in four sorghum cultivars with a wide range of pre-infectional nematode resistance relative to the susceptible tomato cultivar. Post a 56-day exposure of Meloidogyne enterolobii, J2 from soil and root samples were subjected to step-wise fixative solutions and then mounted on slides. Length-related and diameter-related morphometrics were measured using an OMAX microscope – equipped with a digital measuring software. The study was conducted over two seasons and the seasonal interactions on morphometrics were not significant. Relative to the tomato cultivar, sorghum treatments generally increased the length-related morphometrics, but decreased the diameter-related variables in both soil J2 and root J2. The null hypothesis was therefore rejected in favour to the assumption that upon exposure of J2 bodies to botanical chemicals in both soil and root samples, with certain morphometrics being adjusted to ameliorate the potential damage of hydrostatic pressure on internal organs of the infective juveniles. In conclusion, in pre-infectional nematode resistance, J2 bridge chemicals in the rhizosphere and enter the root system, where chemicals still have effects on morphometrics of nematodes.
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
