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Salinity Tolerance of 33 Greens-Type Poa annua Experimental Lines

Dep. of Crop and Soil Sciences, The Pennsylvania State Univ., University Park, PA 16802. Mention of trade names or commercial products in this article is solely for the purpose of providing information and does not imply recommendation or endorsement by The Pennsylvania State University

View larger version (17K): [in this window] [in a new window]   Figure 1. Decline in relative percentage cover (PC) of six representative greens-type Poa annua experimental lines with increasing exposure time to 8 dS m–1 salinity treatment. Six lines were selected based on relative PC data to represent high (PSU 97-1-25, PSU 99-9-21), intermediate (PSU 99-11-6, PSU 98-5-8), and low (PSU 96-1-9, PSU 98-3-30) salinity tolerance detected among 33 experimental lines. Relative PC was obtained by dividing the treatment of each line by its nonsaline control. Vertical bars denote LSD values at 0.05 probability level (NS = nonsignificant).

View larger version (21K): [in this window] [in a new window]   Figure 2. Decline in relative clipping yield dry weight (CYD) of six representative greens-type Poa annua experimental lines with increasing exposure time to 8 dS m–1 salinity treatment. Six lines were selected based on relative CYD data to represent high (PSU 01-1-46, PSU 99-9-21), intermediate (PSU 99-3-19, PSU 98-4-21), and low (PSU 96-1-9, PSU 98-3-30) salinity tolerance detected among 33 experimental lines. Relative CYD was obtained by dividing the treatment of each line by its nonsaline control. Vertical bars denote LSD values at 0.05 probability level (NS = nonsignificant).