Nitrogen Fixation by US and Middle Eastern Chickpeas with Commercial and Wild Middle Eastern Inocula

Table 1

Mean*  % N fixation, above-ground biomass (AGB), below-ground biomass (BGB), and seed weight in chickpeas (𝑛=40 except for seeds 𝑛=20).

Variety	N fixed (%)	AGB (dry mg plant^−1)	BGB (dry mg plant^−1)	Seed weight (mg)
Sierra (K)^a	86.7^a	283^a	319^bc	568
Troy (K)	85.3^ab	264^a	374^ab	604
Almaz (K)	85.2^ab	255^ab	386^a	496
Arman (K)	83.2^b	228^bc	357^ab	396
Hashem (K)	82.9^b	200^c	296^cd	282
Myles (D)	76.6^c	154^d	271^d	164
P values	<0.0001	<0.0001	<0.0001
Contrast
US varieties	82.9	234	321
Middle Eastern	83.8	228	346
𝑃 value	0.128	0.412	0.007

*Letters that are the same within a column are not significantly different at 𝑃≤0.05.
^aK: Kabuli type seed; D: Desi type seed.