RESISTANT VINES AND HYBRIDS. 11 



of that of Riparia and of Rupestris; Nos. 3306 and 101 U being also 

 able to do well in soils a good deal more compact in nature than those 

 suitable for either of the parents; No. 3309 stands drought well. 



Solonis X Riparia. These hybrids are well known for the heavy- 

 bearing character they communicate to their grafts. The affinity is 

 very good and they are particularly well adapted to wet lands. While 

 adapted to the same soil-conditions mentioned above for the Solonis, 

 they have a much higher resistance to phylloxera than the latter. 

 The best known are Nos. 1615 and 1616 (Couderc). 



Solonis X Cordifolia X Rupestris. These have great vigor, which they 

 hold from the Cordifolia X Rupestris, while they take some of the 

 characters of the Solonis in moist locations. They have proved very 

 valuable in heavy moist clays. No. 202* of Millardet and Grasset is 

 among the best. 



Riparia X Cordifolia X Rupestris (No. 106 8 ). Is very similar to the 

 last group regarding its vigor, but is adapted more particularly to very 

 arid locations, where it has proved superior even to the Rupestris 

 Martin. It will probably be of great value in some of our adobe lands. 



Berlandieri X Riparias. These hybrids have been studied in France, 

 mainly to create a stock having the resistance of the Berlandieri to 

 chlorose, and the easy rooting of the Riparias. Some of the selections 

 have given very satisfactory results (157, 420, 34E). The Berlandieri 

 hybrids are very productive after they have been grafted. The roots 

 are very strong and both surface and deep roots are abundant; as we 

 said before, this hybrid may prove to be very valuable in stiff, dry soils. 



VINIFERA X AMERICAN HYBRIDS. 



Lenoir. Though the question of the origin of the Lenoir is not very 

 well settled, it probably comes in this group of Vinifera X American. 

 The Lenoir has a great affinity for the Viniferas, so that when grafted 

 in the field it gives very good results. It does not root as well from 

 cuttings and does not bench-graft as well as the Riparias and Rupestris, 

 but still gives satisfactory results. The resistance to phylloxera is not 

 high (12-13), which is too low unless it is planted in a soil perfectly 

 adapted to its growth. In rich soils, fertile, and with plenty of moisture, 

 it does very well, but these are also good Riparia soils. When the soil 

 becomes compact, then the Lenoir would do better than the Riparia. 

 But for these heavy lands we have to-day such varieties as the Solonis X 

 Cordifolia X Rupestris, the Riparia X Cordifolia X Rupestris, the 

 Riparia X Rupestris 101 u , which are far superior to the Lenoir in 

 resistance, and ought therefore to receive the preference. 



