OCR Text |
Show 316 FERTIIJITY OF CROSSED 01-IAP. IX. TABLE D-continuerl. RESEDA ODORATA-crossed and self-fertilised pl ants, l eft~ uncovered and ct·oss-fertilised by bt:es, prod uced capsnles as 100 to 100 in number (about) . . . . • • • · · · . VIOLA TRICOLOR-crossed and self-fertilised pl ants, left j ~ncovered and cross-fertilised by bees, produced capsu le· J , , 10 In nun1ber • . • • • . . · · · · · . DELPHINIUM CONSOLIDA-crossed and self-fertili :se(l plant.s, l left uncovered in the gl'eenhouse, produced caps ules 111 , , 56 number . • • . . . . . . • . . . . VISCARIA OCULATA-crossed and self-fertilised plant , left} 77 uncovered in the greenhouse, produce 1 capsules in number " " DIANTHUS CARYOPHYLLUS-plants s~ont an eo u sly sel f- ferti.-~ lised under a net; capsules on mter cr ossed and self-fertilised plants of the 3rd generation contamed seeds in " " 125 nun1ber • • . . . . . • . . . • . . DIANTHUS CARYOPliYLLUS-plants left uncovered and cr oss-) fertilised by insects: off..3pring from plants self-fert ilised! for three generations and then cr ossed by an inter- 73 crossed plant of the same stock, compar ed with plants " " . of the 4th self-fertilised generation, produced seeds by weight • . • . . . • . • • . . . . DIANTHUS CARYOPIIYLLUS-plants le ft uncover ed and cr oss-) fertilised by insPcts: offspring from plants self- fe rtilised for three generations and then crossed by a fre h , , 33 stock, compared with plants of the 4th' self-fe r tilised generation, produced seeds by weight . . . . . . TROPAJ:OLUM MINUS-crossed and self-fertili sed plants, left} 64 uncovered in the greenhouse, produced seeds in number . " " LIMN ANTHES DOUGLASII-crossed and self-fertilised pla nt.s, l left uncovered in greenhou. e, produced cap ules m ,, , 100 number (about) . • . . . . . • . . . · 2nd generation, left uncover ed in the gr eenhouse, pro- ,, , 88 l..UPINUS LUTEUS-crossed and self-fertilised plants of the ~ duced seeds in number (judged from onl y a few pods) . PIIASEOLUS MULTIFLORUS-crossed and self-fer tilised plan~s, l left uncovered in the gr eenhou se, pr oduced seeds 111 , " 100 number (about) • • . . • . . • • • . · LATHYRUS ODORATUS-crossed and self-fertilised plants of~ the 2nd generation, left uncover ed in the ~reenhouse, but , " 91 certainly self-fertilised, produced pods in number . · CLARKIA ELEGANS-crossed and self-fertilised plants, left} 60 uncovered in the greenhou se, produced capsules in num L er " " NEMOPIIILA INSIGNIS-crossed and self-fertilised plants, ~ 29 covered by a net and spontaneously self-fertilised in the " " greenhouse, produced capsules in number . . . · · insects : plants of the 5th inter cr o. sed and self-fert ilised 86 PETUNIA VIOLACEA-left uncover ed and cro s-fertilised byJ generations produced seeds, as judged by the weight of an " " equal numbe1· of capsules . . . • . . . · · CHAP. IX. AND SliJLF-FERTILISED PLANTS. 317 TABLE D-cun tinue1. PETUNIA VIOLACEA-left uncovered as above : offspring o~~ plants self-ferWised for four gener ations and t hen crossed bv a fre sh st ock, compar ed with plants of the 5th self- as 100 to 46 fertilised generation, produced seeds, as judged by the weight of an equal number of capsules . • . , . CYCLAMEN PERSICUM-cr ossed and self-fertilised plants, left} uncover ed in the gr eenhouse, produ ced capsules in number " " ANAGALLIS COLLIN A - cr ossed and se lf-fe rtili sed plants, left} uncovered in the greenhouse, pr od uced capsules in number " " PRIMULA VERIS-left uncover ed in open gr ound and cross-) fertilised by insects : offspring from p lants of the 0rdt illegitimate gener ation cr ossed by a fresh stock, compared , , with plants of the 4th ill egitimat e and self-fertilised generation, produ ced caps ules in number . . . . . 12 8 5 Same plants in the following yea r . " " 3 ·5 PRil\IULA VERIS-(equal-styl ed variety): left uncovered in) open ground and cross-fertilised by insects : offspring I from plants self-fertilised for t wo gener ations and thenJ , , crossed by another variet y, compar ed with plants of t he 3rd self-fertilised generation, pr oduced capsules in number 15 PRIMULA VERlS-(eq ual-styled var.) same plants ; average} number of :seeds per capsule . . . . . . . . " " 71 PRIMULA VERIS-(equal-st yled var.) pr oducti veness of th e ~ same plants, as judged by number of capsules produced , , and average number of seeds per capsule . . . • . 11 This table includes thirty-three cases relating to twenty-three species, and shows the degree of innate fertility of plants of crossed parentage in comparison with those of self-fertilised parentage; both lots being fertilised in the same manner. With several of the species, as with Eschscholtzia, Reseda, ·Viola, Dianthus, Petunia, and Primula, both lots were certainly cross-fertilised by insects, and so it probably was with several of the others; but in some of the species, as with N emophila, and in some of the trials with Ipomcea and Dianthus, the plants were covered up, and both lots were spontaneously self-fertilised. This also was necessarily the case with the capsules produced by the cleistogene flowers of V andellia. |