Effect of moisture stress on leaf and root production in cassava (Manihot esculenta Crantz.)

K. Sreelakshmi, Meera V. Menon

Abstract


Field experiments were conducted at the Agronomy farm of College of Horticulture, Vellanikkara during 2015-16 to assess the effect of moisture stress on leaf production and root yield of cassava varieties grown in different seasons. Four varieties (Vellayani Hraswa, Sree Vijaya, M4 and Sree Athulya) of varying duration were planted in three seasons viz., May, October and December. The results revealed that the highest leaf production, root weight and chlorophyll content were recorded for the crops planted in May and the lowest in December planted crop. Among the varieties, Sree Athulya, the long duration variety, produced significantly higher number of leaves when planted in October and December, whereas the short duration variety, Sree Vijaya, produced higher number of leaves compared to Vellayani Hraswa for both the planting seasons. Root fresh weight was highest for May planting followed by October and December planting. Among the varieties, Sree Athulya and Sree Vijaya recorded higher leaf retention and were observed to be more drought tolerant when moisture stress occurred during early stages of growth.


Keywords


Cassava varieties, chlorophyll, leaf area index, leaf scars, moisture stress

Full Text:

PDF

References


Agili, S. M and Pardales, J. R. 1997. Influence of moisture and allelopathic regimes in the soil on the development of cassava and mycorrhizal infection of its roots during establishment period. Philippine J. Crop Sci., 22: 99 – 105.

Alves, A. C. and Setter, T. L. 2000. Response of cassava to water deficit: leaf area growth and abscisic acid. Crop Sci., 40: 131–137. In: Hillocks, R.J., Thresh, J.M., and Bellotti, A.C. (eds), Cassava: biology, production and utilization, CABI Publishing, UK, pp.67-89.

Aresta, R. B. and Fukai, S. 1984. Effects of solar radiation on growth of cassava (Manihot esculenta Crantz) II. Fibrous root length. Field Crops Res., 9:361-371.

Burns, A., Gledow, R., Cliff, L., Zacarias, A., and Cavagnaro, T. 2010. Cassava: The drought, war and famine crop in a changing world. Sustainability, 11:3572.

Cock, J. H. 1976. Characteristics of high yielding cassava varieties. Exp. Agric., 12:135-143.

Cock, J. H. 1979. Cassava research; editorial. Field Crops Res., 2:185-191.

Doku, E.V. 1965. Breeding for yield in cassava II. Indices of yield. Ghana J. Sci., 5:42-59.

El-Sharkawy, M. A, Hernández, A. P, and Hershey, C. 1992. Yield stability of cassava during prolonged midseason water stress. Exp. Agric., 28:165-174.

Farooq, M., Wahid, A., Kobayashi, N., Fujita, D., and Basra, S. M. A. 2009. Plant drought stress: effects, mechanisms and management. Agron. Sustain. Dev., 29: 185–212

Howeler, R. H. 1991. Long-term effect of cassava cultivation on soil productivity. Field Crops Res., 26:1-18.

Hunt, R. 1982. Plant Growth Curves: the Functional Approach to Plant Growth Analysis, Arnold Publishers, London.

KAU, 2011. Package of Practices Recommendations: Crops. Kerala Agricultural University, Thrissur, 334 p.

Lenis, J. I., Calle, F., Jaramillo, G., Perez, J. C., Ceballos, H. and Cock, J. H. 2006 Leaf retention and cassava productivity. Field Crops Res., 95:26-134.

Parameshwarappa, S. G. and Salimath, P.M. 2008. Field screening of chickpea genotypes for drought resistance. Karnataka J. Agric. Sci., 21:113-114.

Sayedh, O. H. 2003. Chlorophyll fluorescence as a tool in cereal crop research. Photosynthetica, 41: 321–330.

Setter, T. and Fregene, M. 2007. Recent advances in molecular breeding of cassava for improved drought stress tolerance. In: Jenks, M., Hasegawa, P. and Jain, M. (eds), Advances in Molecular Breeding - Toward Drought and Salt Tolerant Crops, Berlin, Germany: Springer, pp. 701–711

Yoshida, S. 1972. Physiological aspects of grain yield. Annu. Rev. Plant Physiol. 23:437-464.


Refbacks

  • There are currently no refbacks.


A KAU publication [CODEN: JTAGEI; ISSN 0971-636X; eISSN 0973-5399]