Acetic acid disturbs rice germination and post-germination under controlled conditions mimicking green mulching in flooded paddy
نویسندگان
چکیده
Cover crop use in organic rice cropping systems efficiently manages the two most limiting factors agriculture - weed competition and nutrient availability. Nonetheless, cover biomasses on soil surfaces under anaerobic conditions flooded produce acids (mainly acetic acid) that cause early phytotoxicity to seedling coleoptile roots. This study evaluated dose-response of acid germination rates post-germination growth traits (coleoptile, first leaf, roots). Under controlled conditions, seeds three varieties (Sant’Andrea, Salvo, Selenio) were immersed concentrations (0, 9, 18, 36, 54, 72 ppm) for eight days. Germination results suggest likely scarred var. based a 15% faster rate compared untreated controls. Across all varieties, increased never slowed germination. During stages, root was always more evident than shoot phytotoxicity, although responses varied among varieties. Root length damage appeared at 36 ppm Sant’Andrea Selenio, 54 Salvo. measurements provided explicit speedy information varietal tolerance and, consequently fermentation suggested direct observation paddy fields is valuable prompt water management decisions, such as flooding interruption. Further development this method may lead complete screening identification related genetic responsible tolerance. Highlights- Based genotype, increasing levels waters can speed germination.- Roots are sensitive shoots during very Early impairments provide phytotoxicity.- A slower induce higher green mulching.
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ژورنال
عنوان ژورنال: Italian Journal of Agronomy
سال: 2022
ISSN: ['1125-4718', '2039-6805']
DOI: https://doi.org/10.4081/ija.2022.1926