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Influence of Different Soil Moistures during the Vegetative Phase of Development of Field Bean ( Vicia faba L. var. minor ) on Leaf Water Status, Photosynthesis Rate and Plant Growth
Author(s) -
Grzesiak S.,
Filek W.,
Koscielniak J.
Publication year - 1989
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1989.tb00707.x
Subject(s) - vicia faba , photosynthesis , dry matter , agronomy , biology , growth rate , horticulture , botany , geometry , mathematics
Abstract The effects of exposure in the vegetative phase of growth to 10‐day spells of mild (30 % of field water capacity – fwc) and severe (20 % fwc) drought on leaf water status, photosynthesis rate, plant growth and distribution of dry matter were studied in field bean. Either drought level caused similar changes of leaf water status and reduced photosynthesis rates. In older leaves these drought effects were greater. Plants exposed to mild drought quickly recovered their full photosynthetic activity and growth rate when optimum water supply was restored, but after severe drought the slower rate of these processes persisted much longer. Reduced growth caused by drought was proportionally the same in stems, leaves and roots, so that the share of dry weights of these organs in total dry matter of whole plants was similar as in control.