270 



FUNDAMENTALS OF CYTOLOGY 



Vacuole, 11, 3G, 37, 38 



Valeriana (angiospeini), 42 



Vaiicheria (green alga), 17 



Vegetal pole, 127 



Vejdovsky, 120 



Velans complex, 200 



Verbena (angiospeini), 230 



Vestigial wings, 176 



Viola (angiosperm), 210, 237, 244, 247 



Virus, 43, 52, 203 



Viscosity, 44, 45 



Vital dyes, 53 



Vitamin A, 30, 50, 208 



Vitamin C, 30, 207 



Vitamin D, 50 



Vitamin E, 50 



Vitelline membrane. 123, 125 



Vitrification, 50 



Volume-surface ratio, 13 



de Vries, 199 



W 



Wall, of plant cell, 75-83 

 Warmke, 63, 188 

 Water, 49 

 Wax, 43, 50 

 Webber, 160 

 Weddle, 221 

 Weier, 166 

 Weismann, 6 

 Westergaard, 188 

 Wheat (see Triticum) 

 Wheat-rye hybrid, 220 

 White eye, 184 

 Whitefish, 58 

 Williams, 18 

 Willow, 99 

 Wilson, 135 

 Wood, 77, 78, 79 



X 



X-chromosome, 180-19 1 



X-ray analysis, 7, 77 



X-ray effects, on chloroplasts, 29 



on chromosomes, 88, 202 



on mutation, 202 

 Xanthophyll, 30 

 Xenia, 146 

 Xylan, 77 



Y-chromosonie, 186-191 

 Yamanouchi, 68 

 Yellow-green leaf, 182, 183 

 Yolk, 43, 122 

 Yuasa, 161 



Zauschneria (angiosperm), 247 



Zea (angiosperm), antipodal cells, 145 



autopolyploidy, 206 



chromosomes, 92, 99, 110, 206 



crossing over, 179 



cytotaxonomy, 238 



hybrids, 241 



idiogram, 239 



inversion, 196 



linkage map, 179, 180 



nucleolus, 86 



reciprocal translocation, 197 



tetraploidy, 206 



trivalent chromosome, 115 



Zea-Euchlaena hybrid, 218, 241 

 Zein, 51 



Zoospores, 157, 158, 159 

 Zygnema (green alga), 34, 56, 158 

 Zygomycetes, 162 

 Zygospore, 162 

 Zygotene, 108, 109 

 Zygotic meiosis, 157, 158, 162 

 Zygotic number, 98 



