A. Senthil, M. Djanaguiraman and R. Chandra Babu


Panse, V.G. and Sukhatme, P.V. (1961). Statistical methods for agricultural workers. ICAR, New Delhi. Sharma, S.C. and Dey, S.C. (1986). Response of soybean to application of growth regulators and in combination with urea and potash. Soybean Genetics Newsletter, 13: 71-74. Sharma, V. and Ravi, V.K (1993). Rooting response of Cucumis sativus hypocotyls cuttings to IBA and vitamins. Indian J. Plant Physiol. 36: 134-136. Srinivasan, P.S. (1984). Studies on physiological aspects of zinc nutrition in three rice cultivars. Ph.D. Thesis, TNAU, Coimbatore.

Tonzig, S. and Trezzi (1954). Ascorbic acid as a growth hormone. Biol. Abstr. 28: 4398. Urwiller, M.J. and Oosterhius, D.M. (1986). The effect of growth regulators pix and IBA on cotton root growth. Arkanzas Farm. Res. 35: 5. Varughese, A., Nair, S.S. and Pillai, K.B. (1993). Transplanting rice by broadcasting the seedlings. J. Trop. Agric. 31: 257-258. Zhang, J.H., Yun Hai, H. and Chen, M. (1995). Effect of p.333 and penicillin on seed germination and seedling growth in maize. J. Shanghai Agric. College, 60: 71-75.

(Received : May 2002; Revised : February 2003)

Madras Agric. J. 90 (1-3) : 188-190 January-March 2003 Research Notes

Effect of saline water on growth, biochemical parameters and yield of french bean K.BALAKRISHNAN AND P. GOVINDARAJAN Agricultural College and Research Institute, Madurai - 625 104. Tamil Nadu. Salinity plays an important role in survival and distribution of crops. Crops which are able to grow and yield under saline conditions show certain physiological attributes which make the crops adapted to salinity. Irrigation water with high chloride content causes considerable damage to plant growth and affects the crop yield. Beans are considered as sensitive crop and the performances of this crop under saline conditions are not encouraging. Earlier studies on the use of saline water high in chloride content is very much restricted to laboratory conditions (Gill and Sharma, 1999). However, studies under field conditions are scanty. The present field experiment, therefore, was conducted to study the effect of saline water with high chloride content on the growth, biochemicals and yield of french bean (Phaseolus vulgaris Linn.) Experiment was conducted in a farmer's field at Oddanchatram in Dindigul districts of Tamil Nadu. French bean (Local variety) was raised in red sandy soil by following normal package of practices during 1996-1997. A field which was irrigated with saline water has been

identified and simultaneously another field in the same location with normal water has also been selected to serve as control. Crops were raised both with normal water as well as with saline water high in chloride content. The irrigation water was analyzed for chemical constituents and data are furnished in Table 1. The third leaf from the top of the main shoot at flowering phase was used for the analysis of chlorophyll and carotenoid content (Arnon 1949), Proline (Bates et al. 1973) nitrate reduchese activity (Wrag and Filner, 1970) and chloride content (Chopra and Kanwar, 1991) at Horticultural College and Research Institute, Periyakulam. The green pods were harvested at vegetable stage and the cumulative yield was recorded. The percentage of Chloride injury was calculated based on the visual symptom of the leaf burn injury (Somani, 1991). The data were subjected to statistical analysis. Considerable reduction in plant growth and yield was observed in french bean due to irrigation with saline water (Table 2). Saline water reduced the plant height to 55 cm as

Effect of saline water on growth, biochemical parameters and yield of french bean


Table 1. Quality Characteristics of Saline Water Characters pH E.C. (dSm-1) HCO-3 (me/l) Ca (me/l) Mg (me/l) Cl (me/l) Na (ppm) K (ppm)

Saline water

Normal water

7.32 1.15 7.40 12.24 10.24 12.62 40.00 0.20

7.12 0.92 4.51 6.15 5.26 4.67 25.0 0.15

Table 2. Effect of saline water on growth, biochemical attributes and yield of French beans (Mean + SE, N=5) Characters Plant height Pigments (mg/g) Total chlorophyll Chlorophyll a Chlorophyll b Carotenoids Leaf chloride (% dry weight) Nitrate reductase (m mol NO-2/g/hr) Proline content (mg/g) Yield of green pod (t/ha) Chloride injury (%)

against 79.5 cm in control. The reduction in plant height due to saline water was mainly because of accumulation of salts in the cell which ultimately alters the water potential, nutrient balance and physiology of the plant (Glenn et al. 1998). Plant pigments viz. chlorophylls and carotenoids were very much affected by salinity. The high chloride content of the saline water might have affected the chlorophyll biosynthesis and resulted in the reduction of chlorophyll content. Salinity affects the nitrogen metabolism right form the uptake of N. The enzyme nitrate reductase which is responsible for the N utilization, is known to be highly sensitive to salinty (Somani, 1991). In the present study too, crop growth with saline water recorded lower nitrate reductase activity (m mol NO2- g hr-1) as compared to the crop grown with normal water (77.4 m mol NO 2- g hr-1). The proline content was

Saline water

Normal water



1.21+0.04 0.79+0.03 0.42+0.05 0.087+0.01 1.61+0.02 45.1+2.01 16.17+2.71 2.75+0.12 80+2.51

3.17+0.10 2.06+0.07 1.11+0.03 0.117+0.02 0.14+0.03 77.4+3.12 7.67+1.14 6.19+0.17 0.25+0.01

increased due to saline water. The altered balance between soluble amino acids and protein may be the cause for such abnormal increase of proline content (Sharma, 1980). The chloride injury was observed to as high as 80% due to saline water. It is worth mentioning here that the typical symptoms of chloride injury starts visible on the 30th day of sowing viz. leaf burn at the tip of the leaves and later on spreads to the other margins and finally cause defoliation. The excessive accumulation of chloride (1.61%) as a result of salinity is the probable reason for the expression of chloride injury. Since french bean is being a sensitive crop to salinity the injury was severe. The reduction in green pod yield as a result of salinity could be attributed to the reduced photosynthetic production due to less chlorophyll biosynthesis coupled with reduced plant growth (Bernstein and Hayward, 1958).

K. Balakrishnan and P. Govindarajan


stress damage at early growth stages. Sci. Cult. 65: 111-112.

References Arnon, D.I. (1949). Copper enzymes in isolated chloroplasts, polyphenol oxidase in beta vulgaris. Plant Physiol. 24: 1-15. Bates, L.R., Waldren, R.P. and Teare, I.D. (1973). A rapid determination of free proline for water stress studies. Pl. Soil. 39: 205-207.

Glenn, E.P., Brown, J.J. and O'Leary, J.W. (1998). Irrigating crops with sea water. Scientific American, 71: 56-61. Sharma, D.A. (1980). Effect of using saline water to supplement canal water irrigation on crop growth of rice. Curr. Agric. 4: 57-60.

Bernstein, L. and Hayward, H.E. (1958). Physiology of salt tolerance. Ann. Rev. Plant Physiol. 9: 25-46.

Somani, L.L. (1991). Crop production with saline water. Agro botanical publisher, pp.305.

Chopra, S.L. and Kanwar, J.S. (1991). Analytical agricultural chemistry, Kalyani Publishers, New Delhi, pp.514.

Wrag, J.L. and Filner, P. (1970). Structural and functional relationship of enzyme activities induced by nitrate in barley. Biochem. J. 5: 817-829.

Gill, K.S. and Sharma, P.C. (1999). Response of salinity stress in Brassica and recovery from

(Received : July 2002; Revised : January 2003)

Madras Agric. J. 90 (1-3) : 190-193 January-March 2003 Research Notes

Genotypic and Phenotypic correlation and path analysis studies in Karonda (Carissa carandas L.) R.B. SAWANT, T.A. MORE, S.A. RANPISE AND S.V. SANWANT Department of Horticulture, College of Agriculture, Kolhapur, Maharastra Karonda (Carissa carandas L.) is important dry land fruit crop exceedingly hardy shrub generally found in forest. The genus Carissa to which Karonda belongs includes 32 species out of which only eight are originated from India and according to Cooke (1904) Carissa is more useful amongst all. The existing population of this crop shows the variability in plant and fruit characters due to heterozygosity (Bhagwat, 1984; Joshi et al. 1986) and this offers great scope for crop improvement for this crop. In selection process and crop improvement knowledge of association of various characters is primary requisite. In the present investigation, the studies were taken with objectives to study the association between ten different morpho physical characters of Karonda which will helpful for further improvement in Karonda. The normally growing 212 genotypes selected from the ten villages of six Tahsils in hills of sub-mountain region of Kolhapur district

were evaluated for growth, yield and quality parameters during 1992 and 1993 and were taken for the present investigation to assess the association between fourteen important characters as indicated in Table 1. The genotypic and phenotypic correlation coefficient were calculated for the different pairs of characters. The correlation coefficients between different characters were estimated at genotypic and phenotypic levels following Johnson et al. (1956), while path analysis was calculated by method suggested by Dewey and Lu (1959) taking fruit weight as dependant. It was revealed from the Table 1 that the magni-tude of level of significance of genotypic correlation coefficients and phenotypic correlation coefficients were more or less same for all the characters. Therefore, the results obtained only on correlation coefficient at phenotypic levels are described hereunder.

Effect of saline water on growth, biochemical parameters and yield ...

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