= A Reversible Photoreaction Controlling Seed Germination by Harry Alfred Borthwick and others
{c}
{tag=Work by Harry Alfred Borthwick}
{tag=Work by Sterling Brown Hendricks}
{tag=Work by Marion W. Parker}
{tag=Work by Eben H. Toole}
{tag=Work by Vivian Kearns Toole}
{title2=1952}
By <Harry Alfred Borthwick>, <Sterling Brown Hendricks>, <Marion W. Parker>, <Eben H. Toole>, <Vivian Kearns Toole>.
Published in Proceedings of the National Academy of Sciences 38(8), pp. 662–666, August 1952. The communicated date, 7 June 1952, is a manuscript date.https://pmc.ncbi.nlm.nih.gov/articles/PMC1063632/[Primary article author roster and publication metadata]{ref}
Online text: https://www.pnas.org/doi/pdf/10.1073/pnas.38.8.662
Cited passages: pp. 662–663: wet blotters, covered dishes, darkness, 20 °C and a two-prism glass spectrograph; p. 664: seven lots of 200 seeds, 16-hour dark imbibition, one-minute red and four-minute far-red exposures, and a two-day endpoint; p. 665, Table 1: qualitative red/far-red reversal and incomplete suppression; p. 663: pigment identification explicitly deferred.
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