HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (2) Citing Articles via Google Scholar Google Scholar Articles by Li, M. Articles by Meng, J. Search for Related Content PubMed Articles by Li, M. Articles by Meng, J. Agricola Articles by Li, M. Articles by Meng, J. Related Collections Crop Cytology Canola

Intersubgenomic Heterosis in Rapeseed Production with a Partial New-Typed Brassica napus Containing Subgenome A^r from B. rapa and C^c from Brassica carinata

National Key Lab. of Crop Improvement, Huazhong Agricultural Univ., Wuhan 430070, China

View larger version (17K): [in a new window]   Fig. 1. The variation of chromosome numbers in plants derived from pentaploid hybrids (AnArBcCnCc).

View larger version (160K): [in a new window]   Fig. 2. Fertility characteristics of new-typed B. napus. (a) A PMC with 19 bivalents from one of 38-chromosomed plant family, 1SH. (b) A PMC with univalents in one partial new-typed B. napus of 1SH family (arrow shows the univalent). (c) Developing siliques from another 38-chromosomed family, GXX, showing normal seed setting.

View larger version (85K): [in a new window]   Fig. 3. Identification of new-typed B. napus with AFLP markers. Lanes from left to right: B. nigra var. Juntus (BbBb), B. oleracea var. Sucheng 1 (C°Co), B. rapa var. Shiqian Baiyoucai (S) (ArAr), B. carinata var. 10167 (BcBcCcCc); and B. napus var. Hua Shuang 3 (H) (AnAnCnCn) and individual plants of partial new-typed B. napus (Ar/An/Cn/Cc) came from a F3 family derived from 1SH, an interspecific cross, (B. carinata var. 10167 x B. rapa var. Shiqian Baiyoucai) x B. napus var. Hua Shuang 3. The subgenomic specific bands were shown with blank arrow (Ar), coattail arrow (Bc), and quinquangular arrow (Cc), respectively. AFLP markers were amplified with the primer pair E+AGT/M+CTC.

View larger version (94K): [in a new window]   Fig. 4. Intersubgenomic hybrids growing at different stages. (a) Seedlings. Left two, a intersubgenomic hybrid Xiangyou 15 x GXX-5; right two, natural B. napus, elite cultivar Zhongyou 821 as standard control. (b) The intersubgenomic hybrid of Xiangyou 15 x GXX-5 at flowering stage (blank arrow and coattail arrow represent Zhongyou 821 and intersubgenomic hybrid, respectively).

View larger version (13K): [in a new window]   Fig. 5. Frequency distribution of partially intersubgenomic hybrids on seed yield. Curve I and II represent the seed yield of hybrids that were made with partial new-typed B. napus in F3 and F4 generations separately and sown in 2000 and 2001, respectively. The asterisk on the curve shows the seed yield of Zhongyou 821.

View larger version (12K): [in a new window]   Fig. 6. The scatter plot of intersubgenomic hybrids derived from crosses between natural B. napus cultivar Huanshuang 3 and plants of 1SH, partial new-typed B. napus.