42 



HISTOLOGIC PROPERTIES AND REACTIONS. 



The following is a summary of the reaction-intensi- 



LBISOH8 OF Tilt. STABCHES OF 11 in BASTEUW 



. 11. PYBBHA, AM> II. nssil.TAN-PYKKIIA. 



In the histologic characteristics ami polarisi 



tiona with selenite, qualitative reactions with 

 iodine, and qualitative reactions with the various chemical 

 the three starches are closely alike. The starch 

 of //. pyrrha in comparison with that of the seed parent 

 has fewer compound grains and aggregates, more single 

 grains with one or more pressure facets, and more 

 ritii of the grams; the hilum is more fre- 

 quently and more extensively fissured and is more eccen- 

 lamellae are distinct in a larger number of 

 grains, but as a rule less in number; the size as a rule 

 ■ proportions of length to breadth are the 

 . and the polariscopic figures, reactions with sele- 

 nil the qualitative reactions with iodine show minor 

 differences winch in the aggregate are of accouni in 

 diffei of the starches. The starch of the hybrid 



esembles those of the parents. It is closer to 

 that of the seed parent in size of the grains and number 

 of the lamtlhe, bul to the pollen parent in the 



the grains, Gssuration and eccentricity of the 

 hilum, and character of the lamellae. In the qualitative 

 polar; : ,.| iodine reactions il is closer to the seed 



i the qualitative reactions with chloral hydrate, 

 a iodide, and potassium sulphocyanate it is more 

 like that of the seed parent, while in the nitric-acid and 

 sodium-salicylate reactions more like that of the other 

 parent. 



Met Expressed by Light, Color, ami Tempera- 

 ture Reactions. 

 Polarization: 



II. ossultan, high to very high, value 83. 



II pyrrha, high to very high, higher than in II. ossultan, value 85 



" nil -Pyih, high to very high, higher than in either parent, 



VIllll' 



Iodine: 



II ossultan, moderately light to moderate, value 45. 



II. pyrrha, moderate to moderately deep, deeper than in II 



tan, value 65. 

 1! ossult.-pyrh., moderately light to moderately dee]., and intei 

 mediate l etween the parents, value 50. 

 an violet: 

 sultan, moderate, value 50. 

 II. pyrrha, moderately light to moderately deep, lighter than in 



II — lultarj, val 

 II. oesult.-pyrh t.. moderately deep, deeper than in 



■ r parent, value 53. 

 Baf renin: 



H. ossultan, moderate t.> n i alue 55. 



II pyrrha, moderate, lighter than in II. ossultan, value 50. 

 il oesull pyrh., moderate t<> moderately deep, deeper than in 

 either parent, value 68. 

 ire ol gelatinizat: 



II oesultan, in majority at 73 to 74°, in all except rare grains at 



II pyrrha, in majority at 71 to 73°, in all except rare grains at 



. i.5°. 

 II snill pyrh., in majority at 70 to 72°, in all but rare grains at 

 72 to . 



'tan are lower than those 

 i enl in the polarization, iodine, and 

 temperature ,-r m those of gentian 



violel inin, The re u tivities of the hybrid arc 



higher than those of either parent in th ition, 



gentian-violet, safranin and temperature reactions, and 



Taule A 3. 



I hloral hydrate: 



ii ossultan 



II. pyrrha 



1 1 ssult.-pyrh 



i hromio acid: 



II. ossultan 



II. pyrrha 



II. owult.-pyrh 



Pyrogallic acid: 



H. ossultan 



II. pyrrha 



H. ossult.-pyrh 



Nitric acid: 



H. ossultan 



II. pyrrha 



II. ossult.-pyrh 



Sulphuric acid: 



H. ossultan 



II. pyrrha 



H. ossult.-pyrh 



Hydrochloric acid : 



II. ossultan 



H. pyrrha 



II. ossult.-pyrh 



Potassium hydroxide: 



H. ossultan 



H. pyrrha 



H. ossult.-pyrh 



Potassium iodide: 



H. ossultan 



H. pyrrha 



H. ossult.-pyrh 



Potassium sulphocyanate: 



H. ossultan 



H. pyrrha 



H. ossult.-pyrh 



Potassium sulphide: 



H. ossultau 



H . pyrrha 



II. ossult.-pyrh 



Sodium hydroxide: 



H. ossultan 



II. pyrrha 



H. ossult.-pyrh 



Sodium sulphide: 



H. ossultan 



H. pyrrha 



II. ossult.-pyrh 



Sodium salicylate: 



H. ossultan 



H. pyrrha 



H. ossult.-pyrh 



Calcium nitrate: 



II. ossultan 



II. pyrrha 



II. ossult.-pyt h 



Uranium nitrate: 



H. ossultau 



H. pyrrha . . . 



H. ossult.-pyrh 



Strontium nitrate: 



II ossultan 



II. pyrrha 



1 1 i -nit. -pyrh 



il nitrate: 



H. ossultan 



II. pyrrha 



II. ossult.-pyrh 



i nitrate: 



II. ossultan 



H. pyrrha 



II. ossult.-pyrh 



( Hi ii ie chloride: 



II. ossultan 



H pyrrha 



II flult.-pj ill 



m chloride: 



il I tan 



II. pyrrha 



II o ult pyrh 



Mercuric chloride: 



II -ultan 



II pj rrha 



II OS ult.-pj rh 



E I S 



7 

 3 

 4 



1 



1 

 1 



10 



5 



20 



4 

 2 

 2 



45 

 70 

 40 



5 

 5 

 6 



14 

 8 



20 



4 



0.5 



3 



4 

 2 

 3 



0.5 

 1 



II o 



10 



2 

 1 

 2 



45 



32 

 22 



1 



1 



0.5 



■-' 

 0.5 



ii:, 



-' 

 1 



0.5 

 il.", 

 0.5 



0.5 

 0.5 

 0.5 



2 7 

 19 

 26 



25 

 20 



45 



r,7 



so 



SO 



17 







l'J 



95 



90 

 95 



40 

 41 

 50 



50 

 61 

 54 



11 



6 



in 



10 



5 



10 



1 



2 



0.5 



31 



8 



27 



3 



:; 

 4 



95 

 90 

 85 



0.5 

 0.5 

 0.5 



0.5 

 0.5 



37 

 28 

 36 



99 

 99 

 99 



80 



Ml 

 93 



30 

 16 



40 



99 

 99 

 99 



62 

 70 



82 



62 

 72 

 74 



19 



7 



20 



34 

 25 



48 



:; 

 3 

 3 



39 



29 

 35 



5 

 5 

 6 



99 

 99 

 98 



.', 



:; 



■-■ 



6 



4 

 4 



10 

 5 

 4 



42 I.", 

 39 12 



to -u 



90 95 



92 96 



96 98 



43 56 



33 50 



65 67 



75 

 80 

 89 



09 

 74 

 76 



21 

 11 

 25 



48 

 46 



01 



11 

 36 

 43 



o.-. 

 0.5 

 0.5 



86 



88 

 91 



73 

 75 



78 



23 



17 

 33 



64 

 61 

 70 



4 

 3 

 3 



48 

 43 

 45 



9 

 5 

 8 



99 .. 



..5 



3 



.. 2 



9 10 



.. | 4 

 6 



11 12 

 S 12 

 11 



3 

 2 

 2 



5 



0.5 



2 



4 

 2 



1 



3 

 0.5 

 0.5 



2 

 0.6 



1 



