Irish Gardeners Forum Home
 FAQFAQ   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Custom Search
   
Weather Report /
Moon Phase for Ireland

Post new topic   Reply to topic    Irish Gardeners Forum Home -> Vegetable growing, fruit and allotments in Ireland

What's wrong with cross pollination of runner beans ?


 
Most Recent Posts Mr Mdidleton open day
Last post: Greengage
Grow lights
Last post: Blowin
Preparation for new site
Last post: tagwex
...What did you do Today...
Last post: Sue Deacon
 
Visit TheGardenShop.ie
Author Message
diarmuid
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 15 Mar 2012
Posts: 3

PostPosted: Thu Oct 23, 2014 6:02 pm    Post subject: What's wrong with cross pollination of runner beans ? Reply with quote

I've grown Scarlets and Painted Ladies together this year and have harvested beans for planting next year. They will have cross-pollinated, no doubt.

Put "runner beans cross pollination" into Google and every site will tell you to:
- " only grow one type of runner bean"
- " Varieties must be separated by at least mile to ensure pure seed" - that's a challenge in my garden

Other than the excitement of waiting to find out what my crossed variety will look and taste like, what else can I expect and why is the consensus not to cross? Is it immoral? Is "Bean Purity" so important?

Educated opinions or rants, please.

Thanks
Back to top
View user's profile Send private message
tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
Posts: 4357
Location: Co. Wexford

PostPosted: Thu Oct 23, 2014 6:28 pm    Post subject: Reply with quote

That would be a challenge in most peoples gardens unless one is a TD or MEP! Cannot wait to hear the answers to this one. I had two types of beans this year so according to your findings I could well have a mongrel variety next year. I have to wonder how allotment owners and people in rows of houses manage to keep their seed pure.
_________________
Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
Back to top
View user's profile Send private message
Dr. Sunny Thomson
Rank attained: Rowan Tree
Rank attained: Rowan Tree


Joined: 23 Aug 2006
Posts: 132
Location: ireland

PostPosted: Thu Oct 23, 2014 6:51 pm    Post subject: Re: What's wrong with cross pollination of runner beans ? Reply with quote

diarmuid wrote:
Is "Bean Purity" so important?


Very hard to keep beans pure, so I would not worry about it.


diarmuid wrote:
" Varieties must be separated by at least mile to ensure pure seed"


Short of setting up surface to air missiles to take down any wandering bees, I don't know how that would work.
Laughing
Laughing
Back to top
View user's profile Send private message
Greengage
Rank attained: Chlorophyll for blood


Joined: 09 Nov 2011
Posts: 2798
Location: Kildare

PostPosted: Thu Oct 23, 2014 8:55 pm    Post subject: Reply with quote

This is an excellent question, If you look up Scarlet runner beans it says the are self pollinating but this is not possible as they need insects to trip them i.e open the flower to allow insects deposit pollen to them, Im not sure but it may happen that they cannot cross, I also googled it and came up with this info from an American site,

The runner beans (P. coccineus) will cross with each other but not limas or common beans. (snip)

It is rare, but runnerbeans and common beans can and do cross. I had a cross several years ago, and it has been fascinating. At first I did not recognise what was happening - a common bean with red and pink flowers? But the flowers looked different from runner bean flowers. The pods were short, rough skinned, sparse, late maturing and the few black seeds they contained were of irregular size and distorted shape.

The following generation I had some cotyledons in the ground and some above. And the most exquisite flower colours imaginable. Peach, pink, purple, pale blue, apricot. The resulting beans were smooth podded and quite variable in type and yield, including just a single yellow pod on one of the plants containing two tiny seeds. One germinated and I got a very strong growing tall plant with large yellow pods and large brown seeds. Another of these second generation hybrids produced small seeds but with the same markings as the runnerbean that I suspect to have provided the original pollen.

All of the offspring of the cross have become much heavier bearing than the original cross. They still have remarkable flower trusses, but the colours are more muted now. They grow strongly and produce very well, especially later in autumn, when the ordinary beans and the runner beans have stopped. So far the hybrids haven't really stabilised much. I most often get black seeds now, but some are white or other colours.

It is rare, but if you get a chance cross, it is fun following it up, even though the first filial generation isn't very promising.

http://forums.gardenweb.com/forums/load/legumes/msg0208425612012.html?9
It will be interesting to see what others have to say.
Back to top
View user's profile Send private message
Blowin
Rank attained: Orchard owner


Joined: 20 Aug 2008
Posts: 721
Location: Drimoleague, Co Cork

PostPosted: Sat Oct 25, 2014 10:05 am    Post subject: Reply with quote

I contributed to an earlier thread on runner beans and reported on the poor performance of my Cobra seed but, to give them a chance to redeem themselves, I planted the few I had left with a separate wigwam and grew them on, purely for 2015 seed.

To me, the standard seed is a mauve colour with black speckles but some of the more exotic varieties are white, black etc. The Cobra were pure black and about half the size of normal seed. To my surprise, when I stripped the wigwam and extracted the seed, they were all mauve/black, i.e. normal colour.

My interest is solely in producing food and my seed, whether bought or saved, have always been a mixture. Crops have been good throughout so, unless an individual has a particular reason for one variety, I'd say there's no cause to worry what's crossing with what?

_________________
A novice gardener on newly cultivated, stoney ground.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Irish Gardeners Forum Home -> Vegetable growing, fruit and allotments in Ireland All times are GMT
Page 1 of 1

 

Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group

Privacy Policy | Copyright © 2006 - 2017 IrishGardeners.com (part of GardenPlansIreland.com)