<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ridout, Mary E</style></author><author><style face="normal" font="default" size="100%">Tripepi, Robert R</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Improving seed germination of native perennial &lt;em&gt;Phlox longifolia&lt;/em&gt;</style></title><secondary-title><style face="normal" font="default" size="100%">Native Plants Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2009-06-20 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">80-90</style></pages><doi><style  face="normal" font="default" size="100%">10.2979/NPJ.2009.10.2.80</style></doi><volume><style face="normal" font="default" size="100%">10</style></volume><issue><style face="normal" font="default" size="100%">2</style></issue><abstract><style  face="normal" font="default" size="100%">Seeds of native species of perennial phlox often germinate poorly for producers of native plants. To determine seed treatments that might improve germination, we conducted a study on the native longleaf phlox (Phlox longifolia L. [Polemoniaceae]). Seed treatments included a 7 °C (45 °F) cold treatment, a 21 °C (70 °F) warm treatment, 10 or 20 ml/l liquid smoke, 1000 or 2000 ppm KNO3, 100 or 500 ppm GA3, and a 21 °C distilled water control. Seeds were placed on filter paper in Petri plates and germinated in the dark. All treatments except the 7 °C stratification were incubated at 21 °C for 4 wk. At least 90% of Phlox longifolia seeds germinated during the 7 °C cold treatment within 7 to 10 d and had the highest germination percentages of all treatments. The 500 ppm GA3 treatment induced approximately 37% of P. longifolia seeds to germinate in 4 wk, but germination in GA3 treatments was characterized by cotyledons emerging first with few radicles emerging. The 21 °C stratification, liquid smoke, or KNO3 seed treatments failed to induce germination. Germination percentages of P. longifolia seeds in all treatments increased sharply when seeds were moved from 21 °C and into the 7 °C refrigerator. Seeds of P. longifolia exposed to a 7 °C cold treatment germinated quickly at high percentages (&gt; 90%), making this treatment practical for nursery propagation of this native perennial.</style></abstract></record></records></xml>