New Zealand Journal of Agricultural Research abstracts
Using path analysis to determine lucerne (Medicago
sativa L.) seed yield and its components
Suleyman Sengul
Agricultural Faculty
Atatürk Üniversity
25240
Erzurum, Turkey
drsengul@atauni.edu.tr
Abstract A field
experiment using 16 lucerne (Medicago sativa L.)
cultivars was carried out in 2001 and 2002 at the Field Crops
Department, Faculty of Agriculture, Atat<0x00FC>rk
University, Erzurum, Turkey. The relationships between seed yield
components (seed yield per unit area, number of seeds per pod, number
of seeds per inflorescence, number of pods per inflorescence, plant
height, 1000-seed weight, number of inflorescences per unit area) were
determined by path-coefficient analysis. Amongst the characteristics
examined, seed yield per unit area was significantly positively
correlated with the number of seeds per inflorescence (R
= 0.593*), number of pods per inflorescence (R =
0.602*), and seed weight per inflorescence (R =
0.685**). Number of seeds per inflorescence had a higher indirect
effect on seed yield via number of pods per inflorescence and seed
weight per inflorescence. Plant height had a higher positive indirect
effect on seed yield via number of seeds per inflorescence and number
of inflorescences per unit area. Highly significant negative
relationships were determined between germination percentage and seed
yield per unit area (R = –0.667**), and
1000-seed weight (R = –0.582*).
Conversely, positive relationships were observed between germination
percentage and number of inflorescences per unit area (R = 0.803**)
and plant height (R = 0.670**).
Positive direct effect of seed yield inflorescences, seed yield unit
area, and number of seeds per inflorescences suggested that these yield
components may be a good selection criteria to improve seed yield of
lucerne cultivars.
Keywords correlation
coefficient; Medicago sativa; path analysis; seed
yield component
A05011; Received 18 March 2005; accepted 7 October 2005;
Online publication date 9 March 2006
New Zealand Journal of Agricultural Research, 2006, Vol. 49:
107–115
0028–8233/06/4901–0107 © The
Royal Society of New Zealand 2006
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