News Update on Maize Cultivar Research: Aug – 2019

Additive Main Effects and Multiplicative Interaction Analysis of Two International Maize Cultivar Trials

The methodology utilized by the International Maize and Wheat Improvement Center (CIMMYT) to develop and improve its maize (Zea mays L.) germplasm involves analysis of families or experimental varieties in intensive international testing trials. The genotype-environmental interaction is made by differential constitution responses to varied environmental conditions. Its impact is to limit the accuracy of yield estimates and complicate the identification of specific genotypes for specific environments. [1]

Soil Type and Maize Cultivar Affect the Genetic Diversity of Maize Root–Associated Burkholderia cepacia Populations

Burkholderia cepacia populations related to the cereal system were investigated to assess the influence of soil kind, maize variety, and root localization on the degree of their genetic diversity. a complete of one hundred eighty B. cepacia isolates were known by restriction analysis of the amplified 16S rDNA (ARDRA technique). The genetic diversity among B. cepacia isolates was analyzed by the random amplified polymorphic deoxyribonucleic acid (RAPD) technique, victimization the 10-mer primer AP5. [2]

Inhibition of Ovipositional Responses of Chilo partellus (Lepidoptera: Pyralidae) by the Trichomes on the Lower Leaf Surface of a Maize Cultivar

The role of ovipositional responses of the stem borer Chilo partellus (Swinhoe) in determinant resistance-susceptibility of 3 maize, Zea mays L., cultivars in relevance the trichome density on their leaf surfaces was investigated. The cultivars studied were Inbred A (susceptible), V-37 (resistant), and ICZ-T (resistant). The higher leaf surfaces of Inbred A and V-37 square measure lined with trichomes, though the density within the latter is larger than within the former. [3]

Development of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) on pollen from Bt-transgenic and conventional maize

Maize (Zea mays) spore is extremely alimentary and might be employed by predatory arthropods to supplement or replace a carnivorous diet. we tend to demonstrate that maize spore may be used by larvae of the lacewing fly, Chrysoperla carnea (Neuroptera: Chrysopidae) below laboratory conditions. Complete development on maize spore wasn’t potential, however twenty fifth of neonates reached the third arthropod. once only 1 arthropod was fed with spore and therefore the alternative 2 instars with eggs of Ephestia kuehniella (Lepidoptera: Pyralidae), 58–87% of the larvae reached the immature stage. [4]

Growth and Yield Performance of Early Maturing Maize Cultivars as Influenced by Different NPK Fertilizer in Kabba, Kogi State, Nigeria

The experiment was dole out for 2 consecutive growing seasons (2016 and 2017) at the analysis website of science Section, school of Agriculture, Kabba to judge the expansion and yield performance of early maturing maize cultivars as influenced by totally different NPK fertilizer in Kabba, Kogi State, Nigeria. The experiment was a split plot in an exceedingly irregular complete block style with 3 replicates. the most plot treatments were the compoundfertilizer, and therefore the subplot treatments were the four maize cultivars. information were collected from fifteen at random designated plants in every plot. [5]

Reference

[1] Crossa, J., Gauch, H.G. and Zobel, R.W., 1990. Additive main effects and multiplicative interaction analysis of two international maize cultivar trials. Crop Science, 30(3), pp.493-500. (Web Link)

[2] Dalmastri, C., Chiarini, L., Cantale, C., Bevivino, A. and Tabacchioni, S., 1999. Soil type and maize cultivar affect the genetic diversity of maize root–associated Burkholderia cepacia populations. Microbial Ecology, 38(3), pp.273-284. (Web Link)

[3] Kumar, H., 1992. Inhibition of ovipositional responses of Chilo partellus (Lepidoptera: Pyralidae) by the trichomes on the lower leaf surface of a maize cultivar. Journal of economic entomology, 85(5), pp.1736-1739. (Web Link)

[4] Development of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) on pollen from Bt-transgenic and conventional maize

Michael Meissle, Jan Zünd, Mario Waldburger & Jörg Romeis

Scientific Reports volume 4, Article number: 5900 (2014) (Web Link)

[5] Ogundare, S. K., Etukudo, O. O. and Ibitoye-Ayeni, N. K. (2018) “Growth and Yield Performance of Early Maturing Maize Cultivars as Influenced by Different NPK Fertilizer in Kabba, Kogi State, Nigeria”, International Journal of Plant & Soil Science, 25(5), pp. 1-7. doi: 10.9734/IJPSS/2018/43961. (Web Link)

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