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Table 4 Correlation analysis of planting time among growth, yield components, seed yield and quality of onion at Jari northeastern Ethiopia

From: Effect of planting time on growth, yield components, seed yield and quality of onion (Allium cepa L.) at Tehuledere district, northeastern Ethiopia

  PT PTH NL NS DS SH FL DM UD NSU TSW SYPP SYPH GP
PT 1 − 0.915* − 0.858* − 0.834* − 0.905* − 0.929* 0.034 − 0.901* − 0.861* − 0.916* − 0.855* − 0.881* − 0.895* − 0.876*
PTH   1 0.684* 0.920* 0.786* 0.798* 0.039 0.850* 0.875* 0.879* 0.846* 0.845* 0.890* 0.860*
NL    1 0.506 0.718* 0.808* 0.188 0.724* 0.686* 0.816* 0.746* 0.716* 0.735* 0.731*
NS     1 0.782* 0.679* − 0.072 0.738* 0.754* 0.816* 0.804* 0.863* 0.877* 0.871*
DS      1 0.848* 0.035 0.730* 0.708* 0.835* 0.821* 0.828* 0.788* 0.854*
SH       1 − 0.234 0.887* 0.794* 0.726* 0.621 0.669* 0.685* 0.656
FL        1 − 0.339 − 0.074 0.306 0.337 0.226 0.217 0.293
DM         1 0.885* 0.714* 0.688* 0.676* 0.710* 0.663
UD          1 0.803* 0.730* 0.776* 0.781* 0.754*
NSU           1 0.948** 0.976** 0.980** 0.973**
TSW            1 0.925* 0.923* 0.966**
SYPP             1 0.986** 0.981**
SYPH              1 0.966**
GP               1
  1. PT planting time, PH plant height, NL number of leaves/plant, NS number of scape/plant, DS diameter of scape, SH scape height, FL days to 50% flowering, DM days to 50% maturity, UD umbel diameter, NSU number of seed/umbel, TSW thousand seed weight, SYPP seed yield/plant, SYPH seed yield per hectare, GP germination percentage
  2. *, **Significant at 5 and 1% probability levels, respectively. The decimal numbers without any asterisk are nonsignificant (p > 0.05)