RFLP tagging of QTLs conditioning specific leaf weight and leaf size in soybean

1998 ◽  
Vol 96 (3-4) ◽  
pp. 354-360 ◽  
Author(s):  
M. A. R. Mian ◽  
R. Wells ◽  
T. E. Carter ◽  
D. A. Ashley ◽  
H. R. Boerma
Keyword(s):  
Leaf Size ◽  
Specific Leaf Weight ◽  
Leaf Weight

Inheritance of Leaflet Size and Specific Leaf Weight in Alfalfa 1

Crop Science ◽  
1975 ◽  
Vol 15 (5) ◽  
pp. 649-652 ◽  
Author(s):  
S. P. Song ◽  
P. D. Walton
Keyword(s):  
Specific Leaf Weight ◽  
Leaf Weight

Effect of leaf age on photosynthesis and transpiration of cassava (Manihot esculenta)

1977 ◽  
Vol 55 (17) ◽  
pp. 2288-2295 ◽  
Author(s):  
M. Aslam ◽  
S. B. Lowe ◽  
L. A. Hunt
Keyword(s):  
Chlorophyll Content ◽  
Manihot Esculenta ◽  
Leaf Age ◽  
Gas Analysis ◽  
Photon Flux ◽  
Photon Flux Density ◽  
Genotypic Differences ◽  
Specific Leaf Weight ◽  
Manihot Esculenta Crantz ◽  
Leaf Weight

The effect of plant and leaf age on CO2-exchange rates (CER) and transpiration rates in 15 genotypes of cassava (Manihot esculenta Crantz) was measured in situ by infrared gas analysis. The plants were grown in a controlled-environment room with a 14-h photoperiod, day–night temperatures of 29–24 °C, and 60–70% relative humidity.Plant age had no effect on leaf CER, whereas transpiration rates in 14-week-old plants were significantly greater than those in 7-week-old plants. Both CER and transpiration rates decreased with leaf age. The decline was negligible when measured at low photosynthetic photon flux density. At saturating light, however, both CER and transpiration rates decreased significantly in most of the genotypes. Significant genotypic differences were observed in the pattern of decline. Both stomatal (rs) and residual (rr) resistances to the diffusion of CO2 increased with leafage in all the genotypes. The relative increase in rr was much greater than the increase in rs. In all the genotypes the ratio rr:rs was greater than unity, suggesting that rr is the major component of the total resistance to photosynthesis. Chlorophyll content and specific leaf weight also varied significantly among the genotypes. However, chlorophyll content decreased and specific leaf weight increased with leaf age.

VARIABILITY IN FORAGE AND SEED PRODUCTION AND SEEDLING GROWTH IN ASTRAGALUS CICER

1976 ◽  
Vol 56 (3) ◽  
pp. 487-491 ◽  
Author(s):  
S. SMOLIAK ◽  
A. JOHNSTON
Keyword(s):  
Leaf Area ◽  
Seed Weight ◽  
Germination Percentage ◽  
Forage Yield ◽  
Seedling Vigor ◽  
Specific Leaf Weight ◽  
Leaf Weight ◽  
Astragalus Cicer ◽  
Seed Yields ◽  
Seedling Leaf

Forage and seed yield, percentage seed germination, speed of germination index, and 1,000-seed weight were determined for a population of 170 plants selected from Oxley cicer milkvetch (Astragalus cicer L.). Seedlings from open-pollinated seed from the selected plants were measured for leaf weight and leaf area, and specific leaf weight was calculated. Most of the characters studied were asymmetrical in distribution. The correlation coefficient between forage and seed yields of mature plants was positive and highly significant. Seedling leaf weight was positively and closely related to seedling leaf area, but seedling leaf area was a more reliable indicator of photosynthetic efficiency. The variability in the characters studied in the selected population suggests that further improvement in forage yield, germination percentage, speed of germination, and seedling vigor may be obtained through a breeding program.

Effects of a short period of drought on changes in tuber volume and specific leaf weight. I. Long-term changes

1989 ◽  
Vol 32 (3) ◽  
pp. 245-253 ◽  
Author(s):  
Jadwiga W. Płodowska ◽  
Peter H. J. Jongebloed ◽  
Pieter A. C. M. Van De Sanden ◽  
Paul C. Struik
Keyword(s):  
Specific Leaf Weight ◽  
Leaf Weight ◽  
Short Period ◽  
Long Term Changes

scholarly journals THE EFFECT OF CROP LOAD ON FRUIT DRY WEIGHT AND DRY WEIGHT CONTENT, SPECIFIC LEAF WEIGHT, AND LEAF CARBON EXCHANGE.

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 625c-625
Author(s):  
Ido Schechter ◽  
J.T.A. Proctor ◽  
D.C. Elfving
Keyword(s):  
Dry Weight ◽  
Stomatal Resistance ◽  
Sink Strength ◽  
Carbon Exchange ◽  
Specific Leaf Weight ◽  
Physical Damage ◽  
Cross Sectional ◽  
Crop Load ◽  
Leaf Weight ◽  
Weight Content

Mature apple trees (Malus domestica Borkh.) were studied in the 1989 and 1990 seasons to explore the effect of differential crop load on fruit dry weight (DW), DW content, specific leaf weight, and leaf carbon exchange, using girdled and non-girdled limbs. Fruit DW and DW content decreased with heavier fruit loads, however, fruit on girdled limbs had higher fruit DW and DW content. Specific leaf weight did not differ in leaves on non-girdled limbs along the crop load gradient, but increased dramatically in leaves on girdled limbs with crop load lighter than one fruit per cm2 cross-sectional area. These leaves also had a low photosynthetic rate, high stomatal resistance, and high internal CO2 concentration. The results suggest a physiological limit for photoassimilate usage by the tree. Exceeding this limit by reducing sink strength resulted in excessive carbohydrate accumulation in leaves, causing physical damage to the photosystem.

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