Effect of Nitrogen and Sulphur Application on Nitrate Reductaseand ATP- sulphurylase Activities in Soybean

• 발행기관: 한국작물학회
• 저자명: Song Joong Yun Inayat Saleem Fazli Saif Ahmad Malik Zainul Abdin Arshad Jamal
• 간행물 정보: 『한국작물학회지』제51권 제4호, 298~302쪽, 전체 5쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2006.09.30

영문 초록

A number of field experiments were conducted to assess the role of combined application of nitrogen and sulfur to increase the seed and oil yield of non-nodulating soybean (Glycine max (L) Merr.) cv. PK-416 (V1) and cv. PK-1024 (V2). Six combinations of N and S in three replicates each were used for this purpose i.e. 0 S + 23.5 kg N ha-1 (T1); 0 S + 23.5+20 kg N ha-1 (T2); 40 S + 23.5 kg N ha-1 (T3); 40 S + 23.5 + 20 kg N ha-1(T4); 20+20 S + 23.5 kg N ha-1 (T5); 20+20 S + 23.5+20 kg N ha1 (T6). Nitrate reductase (NR) and ATP-sulphurylase activities in the leaves were measured at various growth stages as the two enzymes catalyze the rate limiting steps of the assimilatory pathways of nitrate and sulphate, respectively. The activities of these enzymes were strongly correlated with seed yield. The higher seed, oil and protein yields were achieved with the treatment T6 in both the cultivars due to optimization of NR activity and ATP-sulphurylase activity, as these parameters were influenced by N and S assimilation. Any variation from this combination was observed to decrease the activity of these enzymes resulting in reductions in the seed, oil and protein yield of soybean.

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MATERIALS AND METHODS

RESULTS AND DISCUSSION

ACKNOWLEDGEMENT

REFERENCES

키워드

ATP-sulphurylase nitrate reductase nitrogen oil yield seed yield sulphur