Table 1.

Differential expression of protein spots in Pusa Jai Kisan (N-inefficient) and Pusa Bold (N-efficient) cultivars of Indian mustard under the treatments of low-N, sufficient-N, ambient CO₂, and elevated CO₂ levels.

Treatments comparison	Cultivars of Indian mustard
	Pusa Jai Kisan	Pusa Bold
T1/T0	21	11
T2/T3	27	13
T1/T3	10	21
T0/T2	19	19

T1/T0, ambient CO₂ level and low-N vs. ambient CO₂ level and sufficient-N; T2/T3, elevated CO₂ level and sufficient-N vs. elevated CO₂ level and low-N; T1/T3, ambient CO₂ level and low-N vs. elevated CO₂ level and low-N; T0/T2, ambient CO₂ level and sufficient-N vs. elevated CO₂ level and sufficient-N.