Open AccessInheritance of inorganic and phytic phosphorus in maize (Zea mays L.) kernel
Author(s) -
Zoran Čamdžija,
Vesna Dragičević,
Jelena Vančetović,
M. Stevanović,
J. Pavlov,
Milomir Filipović,
Dragana Ignjatović-Micić
Publication year - 2018
Publication title -
genetika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 15
eISSN - 1820-6069
pISSN - 0534-0012
DOI - 10.2298/gensr1801299c
Subject(s) - hybrid , phytic acid , inbred strain , zea mays , phosphorus , grain yield , biology , agronomy , diallel cross , kernel (algebra) , zoology , horticulture , mathematics , botany , chemistry , genetics , gene , organic chemistry , combinatorics
A set of fifteen elite inbred lines of maize (used as mothers) and three tester inbred lines (used as fathers) were investigated using line x tester statistical model, including both hybrids and inbreds. Four traits were measured: grain yield, 1000 kernel weight, phytic phosphorus (Pphy) and inorganic phosphorus (Pi) in the kernel. Pphy content among hybrids ranged from 2.342 to 4.812 g kg-1 and Pi content from 0.562 to 2.340 g kg-1, while among inbreds (lines and testers) they ranged from 2.503 to 4.180 g kg-1 and from 0.587 to 1.629 g kg-1, respectively. Correlations between the four traits allow breeding for high Pi and low Pphy, as well as for both high Pi and phytate, without compromising grain yield. Correlation for hybrids between Pphy and Pi was 0.185 (p<0.05) and for inbreds 0.142 (non-significant). General combining ability/special combining ability (GCA/SCA) values for all the traits were below 1 (very low) indicated non-additive inheritance. In the investigated set of genotypes, multiple selection indices should be used for simultaneous improvement of grain yield and phosphorus profile of maize grain.