Abuzar M R, Sadozai G U, Baloch M S, Baloch A A,Shah I H, Javaid T, Hussain N. Effect of plant population densities on yield of maize[J]. The Journal of Animal & Plant Science, 2011, 21(4): 692-695
Duvick D N. Genetic contributions to yield gains of five major crop plants[M]. Georiga: Crop Science Society of America and American Society of Agronomiy, 1984: 15-47
[5]
Derieux M, Darrigrand M, Gallais A,Barriere Y,Bloc D, Montalant Y. Estimation du progrès génétique réalisé chez le ma？s grain en France entre 1950 et 1985[J]. Agronomie, 1987, 7(1): 1-11
[6]
Tollenaar M. Genetic improvement in grain yield of commercial maize hybrids grown in Ontario from 1959 to 1988[J]. Crop Science, 1989, 29(6): 1365-1371
[7]
Holmes M G, Harry S. The function of phytochrome in the natural environment—II. The influence of vegetation canopies on the spectral energy distribution of natural daylight[J]. Photochemistry and Photobiology, 1977, 25(6): 539-545
[8]
Harry S. Photomorphogenesis in plants[M]. Berlin:Springer Netherlands, 1986: 187-217
[9]
Sattin M, Zuin M C, Sartorato I. Light quality beneath field grown maize, soybean and wheat canopies-red: far red variations[J]. Physiologia Plantarum, 1994, 91 (2): 322-328
Arnon D I. Copper enzymes in isolated chloroplasts. Polyphenoloxidase in Beta vulgaris[J]. Plant Physiology, 1949, 24(1): 1-15
[17]
Strasser B J, Strasser R J. Measuring fast fluorescence transients to address environmental questions: the JIP test[M]. Dordrecht: Kluwer Academic Publishers, 1995: 977-980
[18]
Krüger G H J, Tsimilli-Michael M, Strasser J. Light stress provokes plastic and elastic modifications in structure and function of photosystem II in camellia leaves[J]. Physiologia Plantarum, 1997, 101(2): 265-277
[19]
Ye Z P, Yu Q. A coupled model of stomatal conductance and photosynthesis for winter wheat[J]. Photosynthetica, 2008, 46(4): 637-640
[20]
Borrell A K, Hammer G L. Nitrogen dynamics and the physiological basis of stay-green in sorghum[J]. Crop Science, 2000, 40(5): 1295-1307
[21]
Verma V, Foulkes M J, Worland A J, Sylvester B R, Cagliari P D S, Snape J W. Mapping quantitative trait loci for flag leaf senescence as a yield determinant in winter wheat under optimal and drought-stressed environments[J]. Euphytica, 2004, 135(3): 255-263
[22]
Hafsi M, Mechmeche W, Bouamama L, Djekoune D, Zaharieva M, Monneveux P. Flag leaf senescence as evaluated by numerical image analysis, and its relationship with yield under drought in durum wheat[J]. Journal of Agronomy and Crop Science, 2000, 185(4): 275-280
[23]
Briantais J M, Dacosta J, Goulas Y, Ducruet J M, Moya I. Heat stress induces in leaves an increase of the minimum level of chlorophyll fluorescence, Fo: A time-resolved analysis[J]. Photosynthesis Research, 1996, 48(1/2): 189-196
Van Heerden P D R, Strasser R J, Krüger G H J. Reduction of dark chilling stress in N2-fixing soybean by nitrate as indicated by chlorophyll a fluorescence kinetics[J]. Physiologia Plantarum, 2004, 121(2): 239-249
[28]
Van Heerden P D, Tsimilli-Michale M, Krüger G H, Strasser R J. Dark chilling effects on soybean genotypes during vegetative development: parallel studies of CO2 assimilation, chlorophyll a fluorescence kinetics O-J-I-P and nitrogen fixation[J]. Physiologia Plantarum, 2003, 117(4): 476-491
[29]
Appenroth K J, St？ckel J, Srivastava A, Strasser R J. Multiple effects of chromate on the photosynthetic apparatus of Spirodela polyrhiza as probed by OJIP chlorophyll a fluorescence measurements[J]. Environmental Pollution, 2001, 115(1): 49-64
Varlet G C, Gautier H. Plant morphogenetic responses to light quality and consequences for intercropping[J]. Joural of Experimental Botany, 2002, 53(378): 2207-2216
[32]
Rousseaux M C, Hall A J, Sánhez R A. Light environment, nitrogen content, and carbon balance of basal leaves of sunflower canopies[J]. Crop Science, 1999, 39(4): 1093-1100
[33]
Tollenaar M, Daynard T B. Leaf senescence in short-season maize hybrids[J]. Canadian Journal of Plant Science, 1978, 58(3): 869-874
[34]
Borrás L, Maddonni G A, Otegui M E. Leaf senescence in maize hybrids: plant population, row spacing and kernel set effects[J]. Field Crops Research, 2003, 82(1): 13-26
