Effects of canopy shade on the morphology, phenology, and seed characteristics of Powell amaranth (Amaranthus powellii)

10.1111/j.1365-3180.1993.tb01945.x

10.1016/S1360-1385(99)01383-7

C. L. Ballar&eacute, R. A. Sanchez, A. L. Scopel, J. J. Casal, and C. M. Ghersa .1987 .Early detection of neighbour plants by phytochrome perception of spectral changes in reflected sunlight., Plant Cell Environ, 10 :551 –557 .

I. A. Bello, M. D. Owen, and H. M. Hatterman-Valenti .1995 .Effect of shade on velvetleaf (Abutilon theophrasti) growth, seed production, and dormancy., Weed Technol, 9 :452 –455 .

10.1016/S0065-2660(08)60048-6

10.1111/j.1365-3180.2004.00392.x

D. C. Brainard, and R. R. Bellinder .2004b .Weed suppression in a broccoli-winter rye intercropping system., Weed Sci, 52 :281 –290 .

10.1614/0043-1745(2001)049[0031:MTIMOV]2.0.CO;2

10.1139/b03-012

10.1086/283103

10.1111/j.1365-3040.1994.tb00177.x

10.1104/pp.119.3.909

10.1111/j.1365-3040.1989.tb02131.x

10.1046/j.1365-3180.2003.00317.x

K. J. Halliday, M. Koornneef, and G. C. Whitelam .1994 .Phytochrome B and at least one other phytochrome mediate the accelerated flowering response of Arabidopsis thaliana L. to low red/far-red ratio., Plant Physiol, 104 :1311 –1315 .

A. Kadman-Zahavi, and E. Ephrat .1974 .Opposite response groups of short-day plants to the spectral composition of the main light period and end-of-day red or far-red irradiations., Plant Cell Physiol, 15 :693 –699 .

10.1093/jxb/28.5.1125

10.1016/0040-5809(82)90032-6

S. Z. Knezevic, M. J. Horak, and R. L. Vanderlip .1999 .Estimates of physiological determinants for Amaranthus retroflexus., Weed Sci, 47 :291 –296 .

10.1614/0043-1745(2001)049[0617:RTORPE]2.0.CO;2

J. M. McCullough, and W. Shropshire .1970 .Physiological predetermination of germination responses in Arabidopsis thaliana (L.) Heynh., Plant Cell Phys, 11 :139 –148 .

10.1046/j.1365-3180.1999.00151.x

10.2307/2404425

S. M. McLachlan, C. J. Swanton, S. F. Weise, and M. Tollenaar .1993a .Effect of corn-induced shading and temperature on rate of leaf appearance in redroot pigweed (Amaranthus retroflexus L)., Weed Sci, 41 :590 –593 .

S. M. McLachlan, M. Tollenaar, C. J. Swanton, and S. F. Weise .1993b .Effect of corn-induced shading on dry matter accumulation, distribution, and architecture of redroot pigweed (Amaranthus retroflexus)., Weed Sci, 41 :568 –573 .

10.2307/2404658

10.1038/262210a0

L. Nisensohn, and D. Faccini .1993 .Persistence of redroot pigweed seeds in no-till soil., Turrialba, 43 :138 –142 .

10.2307/2390026

W. H. Persall, 1927 .Growth studies. VI. On the relative sizes of growing plant organs., Ann. Bot, 41 :549 –556 .

10.2135/cropsci2002.1930

10.1086/284512

R. A. Sanchez, G. Eyherabide, and L. de Miguel .1981 .The influence of irradiance and water deficit during fruit development on seed dormancy in Datura ferox L., Weed Res, 21 :121 –132 .

10.1046/j.1365-3040.1997.d01-96.x

V. Shitaka, and T. Hirose .1998 .Effects of shift in flowering time on the reproductive output of Xanthium canadense in a seasonal environment., Oecologia, 114 :361 –367 .

10.1046/j.1365-3040.1997.d01-104.x

E. W. Stoller, and R. A. Myers .1989 .Response of soybeans (Glycine max) and four broadleaf weeds to reduced irradiance., Weed Sci, 37 :570 –574 .

S. E. Sultan, 1987 .Evolutionary implications of phenotypic plasticity in plants., Evol. Biol, 21 :127 –178 .

10.2307/2265784

10.1016/S1360-1385(00)01797-0

10.2307/1940771