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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1975.tb01523.x/epdf
Last checked: 09/29/2015
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| Publication Type:
| Refereed |
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| Author(s): | Wilson, D. |
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| Author Affiliation: | Welsh Plant Breeding Station, Aberystwyth |
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| Title: | Leaf growth, stomatal diffusion resistances and photosynthesis during droughting of Lolium perenne populations selected for contrasting stomatal length and frequency |
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| Source: | Annals of Applied Biology. Vol. 79, No. 1, January 1975, p. 67-82. |
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| Publishing Information: | London: Cambridge University Press |
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| Keywords: | TIC Keywords: Growth; Drought; Lolium perenne; Soils; Stomata
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| Abstract/Contents: | Lolium perenne selection lines with high calculated stomatal resistances to diffusion (r(s)) as a result of either few or short stomata, maintained leaf extension rates and photosynthetic rates longer than selection lines with low resistances when deprived of water. There were no significant differences between high and low r(s) plants in light saturated CO2 uptake of turgid attached leaves. When grown in soil drying to 21% moisture, plants with low calculated r(s) exhibited lower minimum leaf resistances (r(l)) than those with high, measured with a diffusion porometer, on all except the last day. the daily maximum r(l) (1.5 h after the start of the light period) became greater among low than high r(s) plants as the difference in rate of leaf extension between the two groups of plants increased with drying soil. Rate of leaf extension was negatively correlated with daily maximum r(l) and started to decline when relative leaf water content (RLWC), at 5 h after the start of the light period, fell below about 88%. Transpiration rate of plants grown in different soil moisture regimed was correlated (r=0.62, P<0.01) with mean maximum adaxial leaf conductance (reciprocal of resistance). There was a highly significant correlation (r=+0.62, P<0.01) between calculated adaxial r(s) and mean minimum measured r(l) among plants growing at high or intermediate soil moisture, but not at low. Therefore, some random variation in minimum r(l), even with adequate moisture, seemed to be unaccounted for by variation in stomatal numbers or size. Selection for increased numbers of adaxial stomata also resulted in more on the abaxial surface, but mean adaxial/abaxial ratio in the 'frequent' stomata plants was still only about 9:1. |
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| Language: | English |
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| References: | 27 |
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| Note: | Tables
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wilson, D. 1975. Leaf growth, stomatal diffusion resistances and photosynthesis during droughting of Lolium perenne populations selected for contrasting stomatal length and frequency. Ann. Appl. Biol. 79(1):p. 67-82. |
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| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1975.tb01523.x/epdf
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QH 301 .A48 |
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