+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effect of cotyledon excision on development and nitrate reductase activity in soybean seedlings glycine max cultivar santa rosa



Effect of cotyledon excision on development and nitrate reductase activity in soybean seedlings glycine max cultivar santa rosa



Revista Brasileira de Botanica 4(1): 43-48



The effect of the excision of 1 or 2 cotyledons on the development of the seedlings and on leaf nitrate reductase activity was studied in soybeans cv. Santa Rosa cultivated in growth chamber under continuous light. The excision of the 2 cotyledons, 24 h after seedling emergence caused inhibition of dry matter accumulation and growth of the primary leaves of 78 and 75%, respectively, after 240 h of exposure to continuous light. There was a 72 h delay in the expansion of the primary leaves. The 1st trifoliolate leaf did not develop throughout the experiment. The procedure caused a 81% decrease on dry weight and a 62% reduction of stem height, 336 h after exposure to continuous light. The removal of 1 cotyledon produced minor effect on plant and leaf growth, after 240 h of exposure to continuous light. The area and dry weight of the primary leaves decreased 21 and 20%, respectively. The excision of 1 cotyledon produced no effect on the expansion of the 1st trifoliolate leaf. The height and dry weight of stem diminished 14 and 29%, respectively, 336 h after exposure to continuous light. Maximum nitrate reductase activity, expressed on a leaf basis, in the primary leaves decreased 91 and 35%, when the 2 and 1 cotyledons were excised, respectively.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 005229715

Download citation: RISBibTeXText


Related references

Development of nitrate reductase activity in green tissues of soybean glycine max cultivar santa rosa seedlings. Zeitschrift fuer Pflanzenphysiologie 104(1): 17-24, 1981

Effects of norflurazon san 9789 on light increased extractable nitrate reductase activity in soybean glycine max cultivar hill seedlings. Plant Cell & Environment 5(2): 155-162, 1982

Differential effect of tungsten on the development of endogenous and nitrate induced nitrate reductase activities in soybean glycine max cultivar amsoy leaves. Plant Physiology (Rockville) 70(1): 35-38, 1982

Development of nitrate reductase activity in green tissues of soybean seedlings (Glycine max L. Merr.). Zeitschrift fur Pflanzenphysiologie = International journal of plant physiology04(1): 17-24, 1981

Effect of tungstate on the development of nitrate reductase activities in soybean leaves glycine max cultivar amsoy. Plant Physiology 67(4 Suppl.): 15, 1981

Soybean glycine max cultivar tracy stem in vivo nitrate reductase activity. Annals of Botany 55(5): 759-762, 1985

Soybean glycine max cultivar prize nadph nitrate reductase and nadh nitrate reductase. Plant Physiology 75(Suppl. 1): 10, 1984

Effect of chlorate nitrogen source and light on chlorate toxicity and nitrate reductase activity in soybean glycine max cultivar wells leaves. Physiologia Plantarum 53(4): 505-510, 1981

Limitations on leaf nitrate reductase activity during flowering and podfill in soybean glycine max cultivar clark. Plant Physiology (Rockville) 80(2): 454-458, 1986

Nitrogen economy of a single fruiting node of soybean glycine max cultivar santa rosa. Zeitschrift fuer Pflanzenphysiologie 111(1): 29-38, 1983

Influence of origin on the physiological quality of soybean (Glycine max (L) Merrill) seeds of the Santa Rosa cultivar. 1977

Effects of delaying the fungicide treatment of soybean glycine max cultivar santa rosa seeds on germination. Cientifica 7(2): 261-266, 1979

The role of seed coat in early stages of soybean glycine max cultivar santa rosa germination. Biologia Plantarum 28(4): 258-264, 1986

Soybean glycine max cultivar williams mutants lacking constitutive nitrate reductase activity 1. selection and initial plant characterization. Plant Physiology 72(2): 503-509, 1983

Phytochrome and photosynthetic control of extractable nitrate reductase activity in soybean glycine max and barley hordeum vulgare seedlings. Plant Physiology (rockville)Suppl): 54, 1980