- Project Runeberg -  Svensk botanisk tidskrift / Band 9. 1915 /
418

Table of Contents / Innehåll | << Previous | Next >>
  Project Runeberg | Catalog | Recent Changes | Donate | Comments? |   

Full resolution (JPEG) - On this page / på denna sida - Sidor ...

scanned image

<< prev. page << föreg. sida <<     >> nästa sida >> next page >>


Below is the raw OCR text from the above scanned image. Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan. Ser du något fel? Korrekturläs sidan nu!

This page has never been proofread. / Denna sida har aldrig korrekturlästs.

400

SHULL glaubt, dass CCDD-Formen aus Formen mit nur einem
Faktor für die trianguläre Kapselform entstanden sind. »It may
be possible», schreibt er (1914 S. 141), »to get some further experi-
mental evidence that duplication of the capsule-character in Bursa
is a comparatively recent derivative condition, — — —, by means
of crosses between Bursa Heegeri and the oldest races of B. bursa
pastoris which can be found; for if my hypothesis is correct, such
crosses would probably result in 3:1 ratios in F,. I am now
seeking evidence along this line by new crosses with B. bursa-
pastoris from different regions, and hope to be able at a later date
to give further data bearing upon this question.» Wie ich oben
hervorgehoben habe, ist in der Natur wenigstens eine derartige
Capsella-Rasse vorhanden, welche ich durch einen glücklichen Zu-
fall bei meinen Experimenten herangezogen habe.

CITIERTE LITTERATUR
ALMQUIST, E., Studien über die Capsella bursa pastoris (L.) — Acta hort.
Bergiani, 4. 1907.
SHULL, G. HARRISON, Bursa bursa-pastoris and Bursa Heegeri: biotypes

and hybrids. — Carnegie Institution of Washington Publ. N:o 112.
Washington 1909.

—»—, Defective inheritance-ratios in Bursa hybrids. — Verhandl. d.
naturf. Ver. in Brinn, 49. 1911.

—»—, Duplicate genes for capsule-form in Bursa bursa-pastoris. — Zeitschr.

f. indukt. Abstam. u. Vererbungsl., 12. 1914.

SoLMS LAUBACH, H. Graf z., Cruciferenstudien I. Capsella Heegeri Solms.,
eine neu entstandene Form der deutschen Flora. — Bot. Zeit,
58. 1900.

<< prev. page << föreg. sida <<     >> nästa sida >> next page >>


Project Runeberg, Sat Jun 15 00:10:54 2024 (aronsson) (download) << Previous Next >>
https://runeberg.org/svbotan/9/0444.html

Valid HTML 4.0! All our files are DRM-free