Pollen germination and pollen tube growth in zp maize lines

Abstract

The study was conducted on the in vitro pollen germination at 26 degrees, 28 degrees, 32 degrees and 35 degrees C for 24h of male parental lines, pollen tube growth in vivo in cross pollination of female and male parental lines that make couples in four hybrids: ZP 504 su (female ZPPL 51 x male ZPPL 67); ZP 677 (female ZPPL 17 x male ZPPL 201); ZP 704 (female ZPPL 109 x male ZPPL 79), ZP 611 k (female ZPPL 126 x male ZPPL 105), and the open pollination of female parental lines of the above mentioned hybrids. Pollen germination in vitro and pollen tube growth dynamics in vivo showed different genotypic specificities with the tests applied. The obtained results were discussed in the context of reproductive biology of ZP maize lines and aimed to create the preconditions for successful management and direction of the process in practice -seed production in certain environmental conditions.