My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in CS

  1. Vol. 11 No. 1, p. 48-50
     
    Received: Apr 23, 1970
    Published: Jan, 1971


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1971.0011183X001100010016x

Effects of Potassium Nitrate on Germination and Respiration of Dormant and Nondormant Kentucky Bluegrass (Poa pratensis L.) Seed1

  1. J. D. Maguire and
  2. K. M. Steen2

Abstract

Abstract

Respiration rates for germinating ‘Cougar’ and ‘Newport’ Kentucky bluegrass (Poa pratensis L.) seed produced in 1965, 1968, and 1969 (freshly harvested) increased rapidly for 2 to 4 days after imbibition in 0.2% KNO3 and in water, then slowly increased for the remainder of a 7–day period. Cougar seed treated with KNO3 had higher respiration rates than water-treated seed; only slight increases were obtained with KNO3-treated New port seed. Seed from 1965 and 1968 took up oxygen more rapidly than the 1969 seed. Respiration rates of 1– and 4–month-old Newport seed decreased rapidly 3 to 4 days after imbibition.

Germination tests of 1969 seed at 1 month after harvest after imbibition showed Newport seed to be more dormant than Cougar. KNO3 increased germination of 1–, 4– and 9–month-old Newport seed but had no effect on Cougar seed.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .