332 EXPERIMENT STATION RECORD. [Vol. 37 



crops for rotations. Chiquita, Mammoth, Cloud, and .Tet for forage, and Haber- 

 landt for seed production, proved to be good soy-bean varieties. All soy beans 

 suffered from rabbit depredations. 



Kansas, Wyoming, and Algeria alfalfas have produced good yields. A com- 

 parison of clo.se drilling with cultivated rows 42 in. apart gave a yield of 2.25 

 tons per acre for the former method and 1.31 tons for the latter in 1914. Arti- 

 ficial inoculation is not recommended for this region. 



About 50 varieties of vetches were tested, but none proved suitable for the 

 locality. 



Sunflowers have been tested extensively but were not considered profitable, 

 due to their susceptibility to insect attack. 



Inheritance in wheat, barley, and oat hybrids, E. F. Gaines {Washington 

 Sta. Bui. 135 (1917), pp. 3-61, figs. 9). — Extensive hybridization studies are 

 reported with 6 wheat, 7 barley, and 9 oat varieties, the standard commercial 

 varieties of Washington being used wherever the proper combinations could be 

 obtained. 



The following characters were studie<l : Wheat — beards r. no beards, long 

 head t-. club head, and white grain v. red grain ; barley — beards v. hoods, bald v. 

 covered grain, 6-row r. 2-row heads, and winter v. spring types; and oats — 

 white 1'. black grain color, side t\ tree type of panicle, and hulled r. hull-Ie.ss 

 character. The results of the hybridization are discussed in detail and consid- 

 erable tabulated data presented, showing the hybrid composition and relative 

 frequency of the characters studied in the Fi and F. generations. 



While many of the observations recorded are corroborative of work publishetl 

 in America and Europe, other results were secured which are briefly summarized 

 below. 



The following characters segregated as simj^e allelomorphs in the V, genera- 

 tion : Beardless wheat was dominant over boarded, and club head over long 

 head ; hooded barley was dominant over bearded, covered over bald, and 2-i-ow 

 over 6-row ; and black oats were dominant over white. The remaining charac- 

 ters were produced by multiple factors, or were irregular in inheritance. 



In the bearded and beardless wheat hybrids, the Fi was intermediate and 

 could be segregated in the Fj. The heterozygote of the bearded and hooded 

 barley cros.ses could not be so segregated, and large numbers carried into the F'l 

 failed to produce modified types of these characters. 



Two different crosses of spring barleys produced winter plants in the ratin of 

 8:13- in the Fi generation. 



One variety of white hulless oats produced black oats when crossed with white 

 hulled varieties. Hullessness prevented the devehtpment of glume color in th«' 

 parent and hybrids of all the crosses tested. Crosses of side and tree oats pro- 

 duced intermediate types which bred true in subsequent generations. The per- 

 centage of hulled plants in the Fi of crosses between hulled and hulless oats 

 approached a simple Mendelian recessive, but there was great irregularity be- 

 tween the true hulless and heterozygous types, with an excess of heterozygote.s 

 in most cases. 



Winter oats, barley, spelt, and emmer, N. Schmitz [Maryland l^ta. Bui. 200 

 (1917), pp. 107-130, figs. 8). — Variety tests with winter oats, winter barley, 

 spelt, and emmer since 19i)7 are reported and the production of the crops dis- 

 cussed. 



Dewey, Bicknell, and Culberson, with average yields of 51.23, 49.S9, and 

 49.49 bu., respectively, for the period of 190S-1914, inclusive, were the leading 

 oat varieties tested. The lowest-yielding variety was Boswell, with 22.66 bu. 

 Further data show the percentage of winterkilling, average date of ripening, 

 and average height of plants for the varieties tested. In extensive tests over 



