Peanut Classification Germinated Seed in Python

Abstract

Experiments conducted from 2007 to 2009 evaluated germination of 11 peanut runner-type cultivars. Germination was evaluated in Petridishes incubated over a thermal gradient ranging from 14 to 30deg;C at 1.0thinsp;C increments. Beginning 24thinsp;hr after seeding, peanut was counted as germinated when radicles were greater than 5thinsp;mm long, with removal each day. Germination was counted daily for seven days after seeding. Growing-degree day (GDD) accumulation for each temperature increment was calculated based on daily mean temperature for that Petri dish. Two indices were obtained from a logistic growth curve used to elucidate seed germination by cultivar: (1) maximum indices of germination and (2) GDD value at 80% germination (Germ₈₀), an indication of seed vigor the lower the Germ₈₀nbsp;value, the greater the seed lot vigor. Based on the two indices, seed lots ldquo;AT 3081Rrdquo;, ldquo;AP-3rdquo;, ldquo;GA-06Grdquo;, and ldquo;Carverrdquo; had the strongest seed vigor (Germ₈₀nbsp;26 to 47 GDD) and a high maximum incidence of germination rate (80 to 94%). Seed lots of ldquo;C99-Rrdquo;, ldquo;Georgia-01Rrdquo;, ldquo;Georgia-02Crdquo;, and ldquo;Georgia-03Lrdquo; had inconsistent seed performance, failing to achieve 80% germination in at least two of three years.